newsreleases2023 - Doré Copper Mining Corp

Doré Copper announces rights offering

Not for distribution to United States news wire services or for dissemination in the United States

Toronto, Ontario – November 21, 2023 – Doré Copper Mining Corp. (the “Corporation” or “Doré Copper“) (TSXV:DCMC; OTCQX:DRCMF; FRA:DCM) is pleased to announce that it is commencing a rights offering (the “Rights Offering“) to the holders of common shares in the capital of the Corporation (“Common Shares“) to raise aggregate gross proceeds of approximately $3,960,000. The net proceeds of the Rights Offering will be used for exploration and development activities and for working capital and general corporate purposes.

Under the terms of the Rights Offering, holders of Common Shares at the close of business (Toronto time) on November 28, 2023 (the “Record Date“) will receive 0.337167854796804 of one transferable right (each whole right, a “Right“) for each Common Share held as of the Record Date. All fractional Rights will be rounded down to the nearest whole number of Rights with no additional compensation paid therefor. Each Right will entitle the holder thereof to subscribe for one Common Share (the “Basic Subscription Privilege“) at a subscription price of $0.12 per Common Share (the “Subscription Price“). The Subscription Price represents a 25% discount to the last closing price of the Common Shares on the TSX Venture Exchange prior to the announcement of the Rights Offering. Pursuant to applicable securities laws, and to the extent that other holders of Rights do not exercise all of their Rights under the Basic Subscription Privilege, each holder of Rights who fully exercises its Basic Subscription Privilege will also be entitled to subscribe for additional Common Shares on a pro rata basis at the Subscription Price in the manner prescribed by securities laws and as further detailed in the Rights Offering Circular (as defined below). The Rights Offering is expected to expire at 5:00 p.m. (Toronto time) (the “Expiry Time“) on December 22, 2023 (the “Expiry Date“). Any Rights not exercised at or before the Expiry Time on the Expiry Date will be void and will have no value.

The Rights will be listed on the TSX Venture Exchange under the trading symbol “DCMC.RT” commencing on November 27, 2023 and will be posted for trading until 12:00 p.m. (Toronto time) on the Expiry Date.

The completion of the Rights Offering is conditional upon the satisfaction of certain conditions, including, but not limited to, the receipt of all necessary regulatory approvals, including the final acceptance of the TSX Venture Exchange.

In connection with the Rights Offering, the Corporation has entered into a standby commitment agreement (each, a “Standby Commitment Agreement“) with Ocean Partners UK Limited (“Ocean Partners“) and Equinox Partners Investment Management, LLC (together with Ocean Partners, the “Standby Purchasers“), pursuant to which the Standby Purchasers have each agreed, subject to certain terms and conditions, to exercise its Basic Subscription Privilege in respect of any Rights it holds, and, in addition thereto, to acquire any additional Common Shares available as a result of any unexercised Rights under the Rights Offering (each, a “Standby Commitment“), with each Standby Purchaser purchasing 50% of such Common Shares, such that the Corporation will, subject to the terms of the Standby Commitment Agreements, be guaranteed to issue 33,000,000 Common Shares in connection with the Rights Offering for aggregate gross proceeds to the Corporation of approximately $3,960,000.

Each of the Standby Purchasers is a “related party” of the Corporation under Multilateral Instrument 61-101 – Protection of Minority Security Holders in Special Transactions (“MI 61-101“) because each has beneficial ownership of, or control or direction over, directly or indirectly, more than 10% of the issued and outstanding Common Shares. The Rights Offering is not subject to the related party transaction rules under MI 61-101 based on a prescribed exception related to rights offerings.

Further details on the Rights Offering, including eligibility requirements for shareholders to participate and the procedures to be followed by shareholders in order to subscribe for Common Shares, will be included in a rights offering circular (the “Rights Offering Circular“), a rights offering notice (the “Rights Offering Notice“), a notice to ineligible holders (the “Notice to Ineligible Holders“) and the Standby Commitment Agreements which will be available under the Corporation’s issuer profile on SEDAR+ at www.sedarplus.ca. It is expected that a copy of the Rights Offering Notice, a direct registration system advice representing the Rights (“Rights DRS Advice“) and a subscription form (“Subscription Form“) will be mailed to each registered shareholder of the Corporation resident in the Eligible Jurisdictions (as defined below) as at the Record Date. Registered shareholders who wish to exercise their Rights must forward the Rights DRS Advice, together with the completed Subscription Form and the applicable funds, to the rights agent, Computershare Investor Services Inc., at or before the Expiry Time. Shareholders who own their Common Shares through an intermediary, such as a bank, trust company, securities dealer or broker, will receive materials and instructions from their intermediary.

The Rights Offering will be conducted only in the provinces and territories of Canada (the “Eligible Jurisdictions“). Accordingly, and subject to the detailed provisions of the Rights Offering Circular, Rights will not be delivered to, nor will they be exercisable by, persons resident outside of the Eligible Jurisdictions unless such holders can establish that the transaction is exempt under applicable legislation. Rather, such Rights may be sold on their behalf. If you are a holder of Common Shares and reside outside of Canada, please review the Rights Offering Notice, the Rights Offering Circular and the Notice to Ineligible Holders to determine your eligibility and the process and timing requirements to receive and exercise your Rights. The Corporation requests that any ineligible holder interested in exercising their Rights contact the Corporation at their earliest convenience.

Neither the Rights being offered or the Common Shares have been or will be registered under the United States Securities Act of 1933, as amended, and may not be exercised, offered or sold, as applicable, in the United States absent registration or an applicable exemption from the registration requirements. This news release shall not constitute an offer to sell or the solicitation of an offer to buy the securities of the Corporation. There shall be no offer or sale of these securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to the registration or qualification of such securities under the laws of any such jurisdiction.

In order to ensure that the Corporation can meet its short‐term obligations prior to the closing of the Rights Offering, the Corporation has entered into a bridge loan agreement with Ocean Partners, pursuant to which Ocean Partners has agreed to provide an unsecured short-term loan to the Corporation in the amount of C$250,000 and bearing interest at a rate of 15% per annum (the “Bridge Loan“). The Bridge Loan constitutes a “related party transaction” for the purposes of MI 61-101 as Ocean Partners is a “related party” of the Corporation. The Corporation is exempt from the requirements to obtain a formal valuation or minority shareholder approval in connection with the Bridge Loan in reliance on sections 5.5(a) and 5.7(1)(a), respectively, of MI 61-101, as the fair market value of the Bridge Loan does not exceed 25% of the Corporation’s market capitalization as calculated in accordance with MI 61-101.

About Doré Copper Mining Corp.

Doré Copper Mining Corp. aims to be the next copper producer in Québec with an initial production target of +50 million pounds of copper equivalent annually by implementing a hub-and-spoke operation model with multiple high-grade copper-gold assets feeding its centralized Copper Rand mill¹. The Corporation has delivered its PEA in May 2022 and is proceeding with a feasibility study.

The Corporation has consolidated a large land package in the prolific Lac Doré/Chibougamau and Joe Mann mining camps that has historically produced 1.6 billion pounds of copper and 4.4 million ounces of gold². The land package includes 13 former producing mines, deposits and resource target areas within a 60-kilometer radius of the Corporation’s Copper Rand Mill.

For further information, please contact:

Ernest Mast
President and Chief Executive Officer
Phone: (416) 792-2229
Email:

Laurie Gaborit
VP Investor Relations
Phone: (416) 219-2049
Email:

For more information, please visit: www.dorecopper.com

Facebook: Doré Copper Mining
LinkedIn: Doré Copper Mining Corp.
Twitter: @DoreCopper
Instagram: @DoreCopperMining

Technical report titled “Preliminary Economic Assessment for the Chibougamau Hub-and-Spoke Complex, Québec, Canada” dated June 15, 2022, in accordance with National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101“). The Technical Report was prepared by BBA Inc. with several consulting firms contributing to sections of the study, including SLR Consulting (Canada) Ltd., SRK Consulting (Canada) Inc. and WSP Inc.
Sources for historic production figures: Economic Geology, v. 107, pp. 963–989 – Structural and Stratigraphic Controls on Magmatic, Volcanogenic, and Shear Zone-Hosted Mineralization in the Chapais-Chibougamau Mining Camp, Northeastern Abitibi, Canada by François Leclerc et al. (Lac Dore/Chibougamau mining camp) and NI 43-101 Technical Report on the Joe Mann Property dated January 11, 2016 by Geologica Groupe-Conseil Inc. for Jessie Ressources Inc. (Joe Mann mine).

Cautionary Note Regarding Forward-Looking Statements

This news release includes certain “forward-looking statements” under applicable Canadian securities legislation. Forward-looking statements include predictions, projections and forecasts and are often, but not always, identified by the use of words such as “seek”, “anticipate”, “believe”, “plan”, “estimate”, “forecast”, “expect”, “potential”, “project”, “target”, “schedule”, “budget” and “intend” and statements that an event or result “may”, “will”, “should”, “could” or “might” occur or be achieved and other similar expressions and includes the negatives thereof. All statements other than statements of historical fact included in this news release, including, without limitation, statements with respect to the terms of the Rights Offering, the completion of the Rights Offering, the Standby Commitments, the anticipated benefits of the Rights Offering, the net proceeds to be available upon completion of the Rights Offering, the intended use of proceeds from the Rights Offering, the timing and ability of the Corporation to close the Rights Offering, the timing and ability of the Corporation to receive necessary regulatory approvals, including the final acceptance of the Rights Offering from the TSX Venture Exchange, the Corporation’s ability to meet its production target, the commencement, timing and completion of a feasibility study, and the plans, operations and prospects of the Corporation and its properties are forward-looking statements. Forward-looking statements are necessarily based upon a number of estimates and assumptions that, while considered reasonable, are subject to known and unknown risks, uncertainties and other factors which may cause actual results and future events to differ materially from those expressed or implied by such forward-looking statements. Such factors include, but are not limited to, the inability of the Corporation to complete the Rights Offering, the termination of the Standby Commitment Agreements, the inability of the Corporation to achieve the anticipated benefits of the Rights Offering, the inability of the Corporation to obtain the necessary regulatory approvals for the completion of the Rights Offering on terms acceptable to the Corporation or at all, the estimated costs of the Rights Offering and the net proceeds to be available upon completion of the Rights Offering, the operating expenses of the Corporation for the 12 month period following the Expiry Date, actual exploration results, changes in project parameters as plans continue to be refined, future metal prices, availability of capital and financing on acceptable terms, general economic, market or business conditions, uninsured risks, regulatory changes, delays or inability to receive required regulatory approvals, health emergencies, pandemics and other exploration or other risks detailed herein and from time to time in the filings made by the Corporation with securities regulators. Although the Corporation has attempted to identify important factors that could cause actual actions, events or results to differ from those described in forward-looking statements, there may be other factors that cause such actions, events or results to differ materially from those anticipated. There can be no assurance that such statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements. The Corporation disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this news release.

Dore Copper reports excellent concentrate grades and recoveries with low impurity element concentrations from flotation tests at its Corner Bay project

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Toronto, Ontario – October 30, 2023 – Doré Copper Mining Corp. (the “Company” or “Doré Copper“) (TSXV: DCMC; OTCQX: DRCMF; FRA: DCM) is pleased to announce positive flotation test results at its flagship Corner Bay high-grade copper-gold project located approximately 55 kilometers by road from the Corporation’s Copper Rand mill, near Chibougamau, Québec. This metallurgical test program is part of the work that is designed to support completion of a feasibility study for the implementation of a hub-and spoke operation model.

Key Highlights from “Lock Cycle” Flotation Tests

Excellent copper recoveries of 98.2% and 96.8% from a representative composite sample
High-quality copper concentrate grades results of 27.0% and 29.6%

The results are an improvement over the figures included in the May 2022 preliminary economic assessment (“PEA”), where the flotation recoveries for copper were 96.7% and the copper concentrate grade was 23.7%. All metallurgical tests completed to date support the effectiveness of utilizing ore sorting technology to improve the mill feed grade and reduce the mill feed tonnage resulting in a high-quality salable copper concentrate.

Ernest Mast, President & CEO, stated, “These flotation test results validate the favorable mineralogy of the Corner Bay deposit for high performance ore sorting technology and conventional flotation to produce a high-quality copper concentrate containing low levels of deleterious metals. These figures demonstrate the robust nature of the processing plant flowsheet that will be used in the feasibility study.”

Metallurgical Test Work Program Summary

Base Metallurgical Laboratories in Kamloops, British Columbia was commissioned to complete Corner Bay metallurgical development and locked cycle flotation testing in support of the feasibility study.

A total of 34 diamond drill holes were used to create a spatially diverse composite sample (the “CBSP” composite) that intersected copper mineralized zones within the Corner Bay Mineral Resource estimate. The core material selected represented different rock types: semi and massive sulphides, quartz veins, diorite dyke, and fresh and altered anorthosite. The drill core was sampled by cutting a quarter split NQ core.

The CBSP composite was firstly compiled into a 202 kilogram sample with a grade of 2.20% Cu. The CBSP composite was then processed through the Steinert ore sorter and mixed with 26% of the unsorted underflow by-passed mineralized material to represent an overall sorted pre-concentrate mineralized material product. The CBSP composite resulted in a 123 kilogram sample with a grade of 3.31% Cu.

The composite sample was evaluated through lock cycle tests to determine the flotation metallurgical performance. The sample was prepared to a nominal grind size of 140 microns K80 in the rougher testing and then processed through a regrind size of approximately 37 microns K80 in the cleaner tests.

The sample responded consistently throughout the test work with excellent performance to conventional flotation processing methods and reagents. Two locked cycle tests were completed with varying retention times to determine the concentrate grade versus recovery. The tests resulted in concentrate grades of 27.0% Cu and 29.6% Cu and recoveries 98.2% and 96.8%, respectively (see Table 1).

Minimal amounts of deleterious elements (e.g. arsenic, antimony, bismuth, cadmium etc.) were present in the concentrate, indicative of the “clean” nature of the concentrate (see Table 2). These results showed the highly commercial quality of the concentrate in terms of salability and payment terms of smelters.

Table 1. Metallurgical Test Work Results

Composite / Test	Lock cycle test feed			Concentrate			Recovery
CBSP (sorted mineralized material)	Cu %	Au g/t	Ag g/t	Cu %	Au g/t	Ag g/t	Cu %	Au %	Ag %
Lock Cycle Test 1	3.31	0.30	9	27.0	1.82	68	98.2	72.1	86.4
Lock Cycle Test 2	3.28	0.55	10	29.6	3.24	72	96.8	62.6	76.9

Table 2. Impurity Element Content of Copper Concentrate

Composite / Test	Impurity Elements (ppm)¹
CBSP (sorted mineralized material)	Arsenic (As)	Antimony (Sb)	Bismuth (Bi)	Cadmium (Cd)	Lead (Pb)	Mercury (Hg)	Zinc (Zn)
Lock Cycle Test 1	22	3	4	10	102	1	735
Lock Cycle Test 2	10	3	3	10	88	1	777

1. All analyses in parts per million (ppm).

Technical Disclosure

All metallurgical test work referenced in this news release was completed by Base Metallurgical Laboratories Ltd. (“BML”), based in Kamloops British Columbia, Canada.

Commercial certified standard material and blanks were inserted by BML into the sample chain accounting for 10% of the samples as part of the quality assurance and quality control (QA/QC) program.

Qualified Person

Ernest Mast, P.Eng., President and CEO of the Corporation, and a “Qualified Person” within the meaning of National Instrument 43-101 – Standards of Disclosure for Mineral Projects, has reviewed and approved the scientific and technical information contained in this news release.

About Doré Copper Mining Corp.

Doré Copper Mining Corp. aims to be the next copper producer in Québec with an initial production target of +50 Mlbs of copper equivalent annually by implementing a hub-and-spoke operation model with multiple high-grade copper-gold assets feeding its centralized Copper Rand mill¹. The Company has delivered its PEA in May 2022 and is proceeding with a feasibility study.

The Company has consolidated a large land package in the prolific Lac Doré/Chibougamau and Joe Mann mining camps that has historically produced 1.6 billion pounds of copper and 4.4 million ounces of gold². The land package includes 13 former producing mines, deposits and resource target areas within a 60-kilometre radius of the Company’s Copper Rand Mill.

For further information, please contact:

Ernest Mast
President and Chief Executive Officer
Phone: (416) 792-2229
Email:

Laurie Gaborit
VP Investor Relations
Phone: (416) 219-2049
Email:

For more information, please visit: www.dorecopper.com

Facebook: Doré Copper Mining
LinkedIn: Doré Copper Mining Corp.
Twitter: @DoreCopper
Instagram: @DoreCopperMining

Technical report titled “Preliminary Economic Assessment for the Chibougamau Hub-and-Spoke Complex, Québec, Canada” dated June 15, 2022, in accordance with National Instrument 43-101 – Standards of Disclosure for Mineral Projects. The Technical Report was prepared by BBA Inc. with several consulting firms contributing to sections of the study, including SLR Consulting (Canada) Ltd., SRK Consulting (Canada) Inc. and WSP Inc.
Sources for historic production figures: Economic Geology, v. 107, pp. 963–989 – Structural and Stratigraphic Controls on Magmatic, Volcanogenic, and Shear Zone-Hosted Mineralization in the Chapais-Chibougamau Mining Camp, Northeastern Abitibi, Canada by François Leclerc et al. (Lac Dore/Chibougamau mining camp) and NI 43-101 Technical Report on the Joe Mann Property dated January 11, 2016 by Geologica Groupe-Conseil Inc. for Jessie Ressources Inc. (Joe Mann mine). Doré Ramp November 1992 Summary, internal Westminer Report.

Cautionary Note Regarding Forward-Looking Statements

This news release includes certain “forward-looking statements” under applicable Canadian securities legislation. Forward-looking statements include predictions, projections and forecasts and are often, but not always, identified by the use of words such as “seek”, “anticipate”, “believe”, “plan”, “estimate”, “forecast”, “expect”, “potential”, “project”, “target”, “schedule”, “budget” and “intend” and statements that an event or result “may”, “will”, “should”, “could” or “might” occur or be achieved and other similar expressions and includes the negatives thereof. All statements other than statements of historical fact included in this news release, including, without limitation, statements with respect to the timing and ability of the Company to receive necessary regulatory approvals, the Company’s ability to meet its production target, the commencement, timing and completion of a feasibility study, and the plans, operations and prospects of the Company and its properties are forward-looking statements. Forward-looking statements are necessarily based upon a number of estimates and assumptions that, while considered reasonable, are subject to known and unknown risks, uncertainties and other factors which may cause actual results and future events to differ materially from those expressed or implied by such forward-looking statements. Such factors include, but are not limited to, actual exploration results, changes in project parameters as plans continue to be refined, future metal prices, availability of capital and financing on acceptable terms, general economic, market or business conditions, uninsured risks, regulatory changes, delays or inability to receive required regulatory approvals, health emergencies, pandemics and other exploration or other risks detailed herein and from time to time in the filings made by the Company with securities regulators. Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ from those described in forward-looking statements, there may be other factors that cause such actions, events or results to differ materially from those anticipated. There can be no assurance that such statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements. The Company disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.

Doré Copper reports exploration drill results – intersects shallow mineralization grading 4.4 g/t Au over 9.8 metres at Gwillim

Download PDF English | French

Toronto, Ontario – October 17, 2023 – Doré Copper Mining Corp. (the “Corporation” or “Doré Copper“) (TSXV: DCMC; OTCQX: DRCMF; FRA: DCM) announces results from its drilling campaign of 1,557 meters completed in July 2023 at the Gwillim and Jaculet projects, both located near Chibougamau, Québec.

Ernest Mast, President and CEO of Doré Copper, commented, “Our summer drilling program at Gwillim has shown the potential of the Signal Zone, another high-grade mineralized zone to the north of the KOD Zones. The geological model for Gwillim continues to advance and further work is warranted to test the potential of these high-grade zones and to identify additional gold mineralized structures.”

Gwillim

In July 2023, Doré Copper completed three holes totaling 957 meters at Gwillim. Hole KOD-22-05 was extended by 90 meters to test KOD Zone C and the other two holes (KOD-23-06 and 07) tested a geophysical anomaly (airborne VTEM™ survey conducted in January 2023), located immediately west of the KOD zone (refer to August 1, 2023 news release).

Hole KOD-22-05E intersected KOD Zone C from 633 to 654 meters with anomalous gold values in several decimetric zones containing variable amounts of pyrite, pyrrhotite and chalcopyrite.

Hole KOD-23-06 intersected a 1.7 meter interval (interpreted as KOD Zone A) containing stringers of chalcopyrite and sphalerite with a highly chloritized basalt. No significant gold mineralization was reported.

Hole KOD-23-07 intersected the Signal Zone at a downhole depth of 15.5 metres with an intercept of 4.4 g/t Au over 9.8 meters, including 16.51 g/t Au over 2.3 meters, characterized by decimetric bands of massive pyrrhotite, pyrite and traces chalcopyrite. Results from a downhole geophysical survey completed in the hole shows an off-hole anomaly located approximately 100 meters down and west of this gold intercept. The KOD Zone envelope (Zones A, B1, B2, and C) was intersected from 358.5 to 462.3 meters, characterized by several intervals containing pyrite, pyrrhotite and chalcopyrite within the pillow rims (typical of the KOD Zone). No significant gold mineralization was reported.

The Signal Zone has been historically traced over a strike length of 600 meters and is approximately 200 meters north of the KOD Zone C. In the late 1980s, approximately 2,357 meters in 27 holes tested the Signal Zone. In addition, a number of historical holes were drilled from underground intercepting both the Signal and KOD Zones.The best historical gold intersections from the surface program (see reference 3) included: 7.1 g/t Au over 2.6 meters (SZ-87-6), 34.96 g/t Au over 1.37 meters (SZ-87-10), and 22.9 g/t Au over 1.2 meters (GL-41). Dore Copper hole KOD-21-02 had also intersected the Signal Zone with 3.33 g/t Au over 13.3 metres at a downhole depth of 28.0 meters. A compilation of this historical work is currently underway.

The KOD mineralized system remains open along strike to the east and below 600 meters. The Signal zone for its part remains open below 230 meters.

The Gwillim property is under a 50/50 joint venture with Argonaut Gold through its wholly-owned subsidiary Prodigy Gold with Doré Copper being the operator.

Jaculet

Doré Copper completed one drill hole of 600 meters in July 2023, which tested the strike extension of Jaculet Zone 1, approximately 100 meters to the west of a previously mined out area and two high-grade copper intercepts in two historical holes, at a vertical depth of approximately 400 meters. The two surface historical holes from Chibougamau Jaculet Mines Ltd. in 1956 had intersected with 4.55% Cu and 0.86 g/t Au over 6.7 meters and 4.25% Cu and 0.59 g/t Au over 6.4 meters, respectively (refer to May 3, 2023 news release).

Hole JA-23-01 intersected 2.29% Cu and 0.36 g/t Au over 1.5 meters, mainly chalcopyrite in centrimetric veins at a downhole depth of 438 meters (Jaculet Zone 1). It is now interpreted that the mineralization in hole JA-23-01 is at the periphery of the main Jaculet Zone 1 ore shoot. The deposit remains open below 400 meters.

Drilling and Quality Control

The Company is using Miikan Drilling as the drilling contractor. Miikan is a joint venture between Chibougamau Diamond Drilling Ltd., the First Nations community of Ouje-Bougoumou and the First Nations community of Mistissini both located in the Eeyou Istchee territory.

Sample (half core) preparation was done at ALS Canada Ltd. (“ALS”) in Val-d’Or, Québec, and the fire assay and ICP analysis was done at ALS in Vancouver, B.C. Samples were weighed, dried, crushed to 75% passing 2 mm, split to 250 g, and pulverized to 85% passing 75 microns. Samples are fire assayed for gold (Au) (50 g) and sodium peroxide fusion ICP-MS finish for 34 elements. Samples assaying >10.0 g/t Au are re-analyzed with a gravimetric finish using a 50 g charge. If visible gold is observed in the sample, the assay is performed by metallic screening whereby the entire sample is crushed, a 1 kg portion is pulverized and screened to 106 µm and analyzed by 50 g fire assay with gravimetric finish.

QA/QC is done in house by Doré Copper geologists with oversight from the Vice President Exploration. The check samples (blanks and standards – 4% of total samples with another 2% of core duplicates taken on half split core) that were inserted into the sample batches are verified against their certified values and are deemed a pass if they are within 3 standard deviations of the certified value. The duplicates are evaluated against each other to determine mineralization distribution (nugget). If there are large discrepancies in the check samples, then the entire batch is requested to be re-assayed.

Sylvain Lépine, M.Sc, P.Geo, MBA, Vice President Exploration of the Corporation and a “Qualified Person” within the meaning of National Instrument 43-101, has reviewed and approved the technical information contained in this news release.

Table 1. Assays Highlights from the 2023 Drill Program

Hole	From (m)	To (m)	Width¹ (m)	Au (g/t)	Ag (g/t)	Cu (%)	Zone
Gwillim
KOD-23-05E	No significant mineralization.	KOD Zone C
KOD-23-06	12.40	12.80	0.40	1.51	1.40	-	Signal
	148.00	148.70	0.70	1.45	4.10	-	Unknown
KOD-23-06	278.30	280.00	1.70	0.38	3.70	0.14	KOD Zone A
including	278.75	279.13	0.38	1.19	4.90	0.30	“
KOD-23-07	15.00	24.80	9.80	4.41	2.11	-	Signal
including	15.00	17.30	2.30	16.51	5.34	-	“
including	15.90	16.90	1.00	36.10	11.20	-	“
	133.50	135.00	1.50	1.24	1.90	-	Unknown
	226.50	228.00	1.50	1.23	14.00	-	Unknown
Jaculet
JA-23-01	426.70	427.10	0.40	0.19	4.90	1.10	Unknown
	438.00	439.50	1.50	0.36	8.43	2.29	Zone 1
	445.70	446.20	0.50	0.34	6.50	1.21	Unknown

The true width of the structures intersected is estimated at approximately 60-80% of the downhole width for Gwillim, and approximately 75-90% of the downhole width for Jaculet.

**Figure 1. Gwillim Property – Plan View of 2023 Drill Program**

About Doré Copper Mining Corp.

Doré Copper Mining Corp. aims to be the next copper producer in Québec with an initial production target of +50 million pounds of copper equivalent annually by implementing a hub-and spoke operation model with multiple high-grade copper-gold assets feeding its centralized Copper Rand mill¹. The Corporation delivered its PEA in May 2022 and is proceeding with a feasibility study.

For further information, please contact:

Ernest Mast
President and Chief Executive Officer
Phone: (416) 792-2229
Email:

Laurie Gaborit
VP Investor Relations
Phone: (416) 219-2049
Email:

For more information, please visit: www.dorecopper.com

Facebook: Doré Copper Mining
LinkedIn: Doré Copper Mining Corp.
Twitter: @DoreCopper
Instagram: @DoreCopperMining

Technical report titled “Preliminary Economic Assessment for the Chibougamau Hub-and-Spoke Complex, Québec, Canada” dated June 15, 2022, in accordance with National Instrument 43-101 Standards of Disclosure for Mineral Projects (“NI 43-101”). The Technical Report was prepared by BBA Inc. with several consulting firms contributing to sections of the study, including SLR Consulting (Canada) Ltd., SRK Consulting (Canada) Inc. and WSP Inc.
Sources for historic production figures: Economic Geology, v. 107, pp. 963–989 – Structural and Stratigraphic Controls on Magmatic, Volcanogenic, and Shear Zone-Hosted Mineralization in the Chapais-Chibougamau Mining Camp, Northeastern Abitibi, Canada by François Leclerc et al. (Lac Dore/Chibougamau mining camp) and NI 43-101 Technical Report on the Joe Mann Property dated January 11, 2016 by Geologica Groupe-Conseil Inc. for Jessie Ressources Inc. (Joe Mann mine).
Report titled “Report on Diamond Drilling Signal Zone, Gwillim Lake Property, McKenzie Township, Quebec” dated January 1988, prepared by Jerry Zuiderveen, Geologist for Flanagan McAdam & Company.

Cautionary Note Regarding Forward-Looking Statements

All statements other than statements of historical fact included in this release, including, without limitation, statements regarding the timing and ability of the Corporation to receive necessary regulatory approvals, and the plans, operations and prospects of the Corporation and its properties are forward-looking statements. Forward-looking statements are necessarily based upon a number of estimates and assumptions that, while considered reasonable, are subject to known and unknown risks, uncertainties and other factors which may cause actual results and future events to differ materially from those expressed or implied by such forward-looking statements. Such factors include, but are not limited to, actual exploration results, changes in project parameters as plans continue to be refined, future metal prices, availability of capital and financing on acceptable terms, general economic, market or business conditions, uninsured risks, regulatory changes, delays or inability to receive required regulatory approvals, health emergencies, pandemics and other exploration or other risks detailed herein and from time to time in the filings made by the Corporation with securities regulators. Although the Corporation has attempted to identify important factors that could cause actual actions, events or results to differ from those described in forward-looking statements, there may be other factors that cause such actions, events or results to differ materially from those anticipated. There can be no assurance that such statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements. The Corporation disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.

Doré Copper provides update on its project activities

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Toronto, Ontario – August 1, 2023 – Doré Copper Mining Corp. (the “Corporation” or “Doré Copper“) (TSXV: DCMC; OTCQX: DRCMF; FRA: DCM) provides an update on its project activities located near Chibougamau, Québec.

Exploration Activities

During Q2 2023, the Doré Copper geology team focused on data compilation and interpretation for the Gwillim and Jaculet projects. A drilling program of 1,557 meters was completed in July 2023.

Gwillim

During Q4 2022, Doré Copper completed two drill holes (KOD-22-04 and 05) totaling 1,342 meters at the KOD Zone in the western part of the Gwillim property, which is under a 50/50 joint venture with Argonaut Gold through its wholly owned subsidiary Prodigy Gold with Doré being the operator.

Doré Copper reported the results from the first hole on May 29, 2023. KOD-22-04 intersected 9.67 g/t Au over 5.3 meters, including 19.46 g/t Au over 2.1 meters, starting at a vertical depth of approximately 580 meters and 11.10 g/t Au over 3.0 meters, which after a new revised interpretation are interpreted as Zone C of the KOD mineralized structure.

Hole KOD-22-05, drilled on the same pad as KOD-22-04 and approximately 60 meters west-southwest of Zone C intersected in KOD-22-04 was determined to have been stopped short of Zone C by approximately 50 meters and was therefore extended in the July drilling program (see below).

In July 2023, Doré Copper completed three holes totaling 957 meters at Gwillim. Hole KOD-22-05 was extended by 90 meters to test Zone C and the other two holes (KOD-23-06 and 07) tested a geophysical anomaly (airborne VTEM™ survey conducted in January 2023), immediately west of the projected down plunge of the near-surface high-grade gold mineralization of Zone C.

Hole KOD-22-05E intersected Zone C from 633 to 654 meters with several specks of gold observed at the beginning of Zone C and mineralization similar to KOD-22-04 Zone C. Hole KOD-23-06 intersected a 1.5 meter interval containing chalcopyrite and sphalerite in stringers. Hole KOD-23-07 intersected the Signal Zone (approximately 250 meters north of the KOD Zone C) characterized by several meters of massive pyrite, pyrrhotite and trace chalcopyrite and KOD Zones A, B and C.

Assays for the three holes are expected in September. The KOD mineralized system remains open along strike to the west and below 600 meters.

Jaculet

Doré Copper completed one drill hole of 600 meters in July 2023 to test the potential down plunge extension of high-grade copper mineralization intersected in two surface historical holes from Chibougamau Jaculet Mines Ltd. in 1956. Historical holes V17 and V17A (wedge from V17 and located approximately 50 meters to the east) intersected Jaculet Zone 1 at a vertical depth of approximately 400 meters with 4.55% Cu and 0.86 g/t Au over 6.7 meters and 4.25% Cu and 0.59 g/t Au over 6.4 meters, respectively (refer to May 3, 2023 news release).

Hole JA-23-01 intersected 1.5 meters of mineralization, mainly chalcopyrite in centrimetric veins, at a downhole depth of 438 metres (Jaculet Zone 1), approximately 12 meters below the interpreted location of the historical intercepts in V17 and V17A. It is now believed that the location of the historical holes is perhaps inaccurate and more to the east, in the area of the underground workings, indicating that the mineralization hit in hole JA-23-01 is at the periphery of the main ore shoot. Assays are pending for hole JA-23-01.

Corner Bay Metallurgical Test Work

During Q4 2022, a spatially diverse composite sample from the Corner Bay core was prepared for additional ore sorting tests at Steinert’s facility in Kentucky, United States, using a XRT sensor (X-ray transmission) and a laser sensor. The composite sample weighted 202 kg and graded 2.20% Cu, and included an 18% external mining dilution from the hanging wall and foot wall of the mineralized interval. The results, announced on April 18, 2023, showed a copper grade increase of 77% (from 2.20% to 3.93%) and copper recoveries in the order of 93.5% with the final reject portion representing 47.5% of the feed mass at a grade of 0.30% Cu. Results were equally positive for gold, silver and molybdenum. Lastly, the arsenic grade of the two pre-concentrates was found to be 12 ppm which leads to a final concentrate with low arsenic levels.

During Q2 2023, a metallurgical test program was started at Base Metallurgical Laboratories in British Columbia. A total of four spatially diverse composites were prepared, including the samples from the Steinert ore sorting tests. The metallurgical test work will include grind size optimization, reagent determination, and grade-recovery curves for copper. Recoveries for gold, silver and molybdenum will also be determined, as well as minor element concentrations in the copper concentrate. The program will also include thickening and filtration testing.

Preliminary results of the metallurgical test work indicate high rougher recoveries of +95% copper with little sensitivity to a grind size between 100 and 180 microns. Complete results are expected in Q3 2023.

Environmental and Social Assessment

In June 2023, Doré Copper received the project directive for the environmental and social assessment of its proposed hub-and-spoke operation from the Quebec Ministry of the Environment, the Fight against Climate Change, Wildlife and Parks (MELCCFP). The project directive is for the development of two underground mines (Corner Bay and Devlin), the rehabilitation of the Copper Rand mill and the use of the existing tailings management facility.

Activities at Copper Rand Mill

During 2022, obsolete electrical cables from the Copper Rand mill were removed as part of the refurbishment program. During Q2 2023, the cables were stripped of their aluminum and rubber sheathing and the copper was sold as #1 copper scrap.

The Corporation project sites and infrastructures were not impacted by the forest fires in northern Quebec. All fires in the Chibougamau area are currently under control. Doré Copper sincerely thanks all involved in mitigating the impacts of the forest fires in northern Quebec and keeping our employees and local communities safe.

Drilling and Quality Control

About Doré Copper Mining Corp.

Doré Copper Mining Corp. aims to be the next copper producer in Québec with an initial production target of +50 million pounds of copper equivalent annually by implementing a hub-and spoke operation model with multiple high-grade copper-gold assets feeding its centralized Copper Rand mill¹. The Corporation has delivered its PEA in May 2022 and is proceeding with a feasibility study.

**Please note, as of August 1, the new address for the Corporate office is 130 King St. W., Suite 1900, Toronto, ON M5X 1E3 **

For further information, please visit the Corporation’s website at www.dorecopper.com or refer to Doré Copper’s SEDAR filings at www.sedar.com or contact:

Ernest Mast
President and Chief Executive Officer
Phone: (416) 792-2229
Email:

Laurie Gaborit
VP Investor Relations
Phone: (416) 219-2049
Email:

For more information, please visit: www.dorecopper.com

Facebook: Doré Copper Mining
LinkedIn: Doré Copper Mining Corp.
Twitter: @DoreCopper
Instagram: @DoreCopperMining

Technical report titled “Preliminary Economic Assessment for the Chibougamau Hub-and-Spoke Complex, Québec, Canada” dated June 15, 2022, in accordance with National Instrument 43-101 Standards of Disclosure for Mineral Projects (“NI 43-101”). The Technical Report was prepared by BBA Inc. with several consulting firms contributing to sections of the study, including SLR Consulting (Canada) Ltd., SRK Consulting (Canada) Inc. and WSP Inc.
Sources for historic production figures: Economic Geology, v. 107, pp. 963–989 – Structural and Stratigraphic Controls on Magmatic, Volcanogenic, and Shear Zone-Hosted Mineralization in the Chapais-Chibougamau Mining Camp, Northeastern Abitibi, Canada by François Leclerc et al. (Lac Dore/Chibougamau mining camp) and NI 43-101 Technical Report on the Joe Mann Property dated January 11, 2016 by Geologica Groupe-Conseil Inc. for Jessie Ressources Inc. (Joe Mann mine).

Cautionary Note Regarding Forward-Looking Statements

Doré Copper announces closing of $2.8 million non-brokered private placement of common shares and flow-through shares

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Not for distribution to United States news wire services or for dissemination in the United States

Toronto, Ontario – June 6, 2023 – Doré Copper Mining Corp. (the “Corporation” or “Doré Copper“) (TSX-V:DCMC; OTCQB:DRCMF; FRA:DRM) is pleased to announce that it has closed its previously announced non-brokered private placement (the “Offering“), pursuant to which the Corporation sold an aggregate of: (i) 5,760,000 common shares in the capital of the Corporation (the “Offered Common Shares“) at a price of $0.20 per Offered Common Share for gross proceeds of $1,152,000; (ii) 1,900,002 common shares in the capital of the Corporation that will qualify as “flow-through shares” within the meaning of subsection 66(15) of the Income Tax Act (Canada) and section 359.1 of the Taxation Act (Québec) (the “Traditional Flow-Through Shares“) at a price of $0.24 per Traditional Flow-Through Share for gross proceeds of $456,000.48; and (iii) 2,875,000 common shares in the capital of the Corporation that will qualify as “flow-through shares” within the meaning of subsection 66(15) of the Income Tax Act (Canada) and section 359.1 of the Taxation Act (Québec) (the “Charitable Flow-Through Shares” and together with the Traditional Flow-Through Shares, the “Flow-Through Shares“) at a price of $0.415 per Charitable Flow-Through Share for gross proceeds of $1,193,125, for aggregate gross proceeds to the Corporation of $2,801,125.48.

Canaccord Genuity Corp. and Paradigm Capital Inc. acted as finders (each, a “Finder“) in connection with the Offering. In consideration for acting as a Finder in connection with the Offering, the Corporation paid an aggregate of $21,000 in cash finder’s fees to the Finders, representing 6% of the gross proceeds of the Offered Common Shares and Traditional Flow-Through Shares that were sold to subscribers introduced by such parties, and issued an aggregate of 91,500 non-transferable warrants (the “Finder’s Warrants“) to purchase common shares in the capital of the Corporation (the “Finder’s Warrant Shares“) to the Finders, representing 6% of the Offered Common Shares and Traditional Flow-Through Shares that were sold to subscribers introduced by such parties, with each Finder’s Warrant being exercisable for one Finder’s Warrant Share at a price of $0.20 per Finder’s Warrant Share until June 5, 2025. In addition, the Corporation also paid fees in the amount of approximately $20,000 (plus applicable taxes) in respect of one subscription under the Offering.

The net proceeds from the sale of the Offered Common Shares will be used for exploration and development activities and for working capital and general corporate purposes. The Corporation will use an amount equal to the gross proceeds received by the Corporation from the sale of the Flow-Through Shares, pursuant to the provisions in the Income Tax Act (Canada), to incur, directly or indirectly, expenses (“Qualifying Expenditures“) related to the Corporation’s projects in Québec, on or before December 31, 2024, that are eligible “Canadian exploration expenses” (as defined in the Income Tax Act (Canada)), which, in the case of the Traditional Flow-Through Shares, will qualify as “flow-through mining expenditures” (as defined in the Income Tax Act (Canada)), and, in the case of the Charitable Flow-Through Shares, will qualify as “flow-through critical mineral mining expenditures” (as defined in the Income Tax Act (Canada)), and renounce all the Qualifying Expenditures in favour of the applicable subscribers of the Flow-Through Shares effective December 31, 2023. In addition, with respect to Québec resident subscribers who are eligible individuals under the Taxation Act (Québec), the Canadian exploration expenses will also qualify for inclusion in the “exploration base relating to certain Québec exploration expenses” within the meaning of section 726.4.10 of the Taxation Act (Québec) and for inclusion in the “exploration base relating to certain Québec surface mining expenses or oil and gas exploration expenses” within the meaning of section 726.4.17.2 of the Taxation Act (Québec).

Mario Stifano, the Executive Chairman of the Corporation, Ernest Mast, the President and Chief Executive Officer and a director of the Corporation, 1974899 Ontario Ltd. (“1974899“), a corporation wholly-owned by Gavin Nelson, the Chief Financial Officer of the Corporation, and funds managed by Equinox Partners Investment Management, LLC (“Equinox Partners“), an insider of the Corporation, subscribed for 125,000 Offered Common Shares, 208,334 Traditional Flow-Through Shares, 100,000 Offered Common Shares and 500,000 Offered Common Shares, respectively, under the Offering on the same terms as arm’s length investors. Additionally, the Corporation understands that funds managed by Equinox Partners were party to an arrangement with the initial subscribers of the Charitable Flow-Through Shares or donees thereof, pursuant to which funds managed by Equinox Partners purchased 2,875,000 common shares in the capital of the Corporation. The participation of Messrs. Stifano and Mast, 1974899 and Equinox Partners in the Offering constitutes a “related party transaction” for the purposes of Multilateral Instrument 61-101 – Protection of Minority Security Holders in Special Transactions (“MI 61-101“). The Corporation is exempt from the requirements to obtain a formal valuation or minority shareholder approval in connection with the Offering in reliance on sections 5.5(a) and 5.7(1)(a), respectively, of MI 61-101, as neither the fair market value of the securities issued to the related parties nor the fair market value of the consideration for the securities issued to the related parties exceeds 25% of the Corporation’s market capitalization as calculated in accordance with MI 61-101. The Corporation did not file a material change report more than 21 days before the expected closing date of the Offering as the aforementioned insider participation had not been confirmed at that time and the Corporation wished to close the Offering as expeditiously as possible.

The Offering was made by way of private placement in each of the provinces of Canada pursuant to applicable exemptions from the prospectus requirements and, in the case of the Offered Common Shares, in certain other jurisdictions, in each case in accordance with all applicable laws. The Offering of the Offered Common Shares was conducted on a private placement basis to persons in the United States who are “accredited investors”, as such term is defined in Rule 501(a) of Regulation D (“Regulation D“) under the United States Securities Act of 1933, as amended (the “U.S. Securities Act“), and in compliance with Rule 506(b) of Regulation D and applicable United States securities laws. The securities issued under the Offering are subject to a four month hold period under applicable Canadian securities laws which will expire on October 7, 2023. The Offering is subject to final acceptance of the TSX Venture Exchange.

The securities offered have not been, nor will they be, registered under the U.S. Securities Act or any state securities law, and may not be offered, sold or delivered, directly or indirectly, within the United States, or to or for the account or benefit of U.S. persons, absent registration or an exemption from such registration requirements. This news release does not constitute an offer to sell or the solicitation of an offer to buy nor shall there be any sale of securities in any state in the United States in which such offer, solicitation or sale would be unlawful.

About Doré Copper Mining Corp.

For further information, please visit the Corporation’s website at www.dorecopper.com or refer to Doré Copper’s SEDAR filings at www.sedar.com or contact:

Ernest Mast
President and Chief Executive Officer
Phone: (416) 792-2229
Email:

Laurie Gaborit
VP Investor Relations
Phone: (416) 219-2049
Email:

For more information, please visit: www.dorecopper.com

Facebook: Doré Copper Mining
LinkedIn: Doré Copper Mining Corp.
Twitter: @DoreCopper
Instagram: @DoreCopperMining

Technical report titled “Preliminary Economic Assessment for the Chibougamau Hub-and-Spoke Complex, Québec, Canada” dated June 15, 2022, in accordance with National Instrument 43-101 Standards of Disclosure for Mineral Projects (“NI 43-101“). The Technical Report was prepared by BBA Inc. with several consulting firms contributing to sections of the study, including SLR Consulting (Canada) Ltd., SRK Consulting (Canada) Inc. and WSP Inc.
Sources for historic production figures: Economic Geology, v. 107, pp. 963–989 – Structural and Stratigraphic Controls on Magmatic, Volcanogenic, and Shear Zone-Hosted Mineralization in the Chapais-Chibougamau Mining Camp, Northeastern Abitibi, Canada by François Leclerc et al. (Lac Dore/Chibougamau mining camp) and NI 43-101 Technical Report on the Joe Mann Property dated January 11, 2016 by Geologica Groupe-Conseil Inc. for Jessie Ressources Inc. (Joe Mann mine).

Cautionary Note Regarding Forward-Looking Statements

This news release includes certain “forward-looking statements” under applicable Canadian and United States securities legislation. Forward-looking statements include, but are not limited to, statements with respect to the use of proceeds of the Offering, the timing and ability of the Corporation to receive necessary regulatory approvals, including the final acceptance of the Offering from the TSX Venture Exchange, the renunciation to the purchasers of the Flow-Through Shares and timing thereof, the tax treatment of the Flow-Through Shares, the Corporation’s ability to meet its production target, the commencement, timing and completion of a feasibility study, and the plans, operations and prospects of the Corporation. Forward-looking statements are necessarily based upon a number of estimates and assumptions that, while considered reasonable, are subject to known and unknown risks, uncertainties and other factors which may cause the actual results and future events to differ materially from those expressed or implied by such forward-looking statements. Such factors include, but are not limited to: general business, economic, competitive, political and social uncertainties; delay or failure to receive regulatory approvals; the price of gold and copper; and the results of current exploration. There can be no assurance that such statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements. The Corporation disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.

Doré Copper reports High-Grade Gold mineralization at Gwillim including 9.67 g/t au over 5.3 metres

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Toronto, Ontario – May 29, 2023 – Doré Copper Mining Corp. (the “Corporation” or “Doré Copper“) (TSXV: DCMC; OTCQX: DRCMF; FRA: DCM) announces positive assay results from the first of two drill holes completed in late 2022 on the KOD zone of the Gwillim property, which is under a 50/50 joint venture with Argonaut Gold Inc. (through its wholly owned subsidiary Prodigy Gold Inc.). Doré Copper is the operator of the joint venture. Gwillim is located approximately 8 kilometers by road northwest of Chibougamau, Québec.

Drilling Highlights

KOD-22-04

Zone B: 9.67 g/t Au over 5.3 meters (visible gold)
Zone C: 11.10 g/t Au over 3.0 meters

In addition to the drilling program, the joint venture completed a 146 line-kilometer VTEM^TM airborne electromagnetic survey over the property and a televiewer acoustic and optical survey in seven drill holes of the KOD zone. The VTEM™ survey results have identified several conductive anomalies. Specifically, one large anomaly is located at the KOD zone starting at a depth of 150 meters, just west of holes KOD-22-04 and 05.

Ernest Mast, President and CEO of Doré Copper, commented, “The limited drilling to date on the KOD zone is demonstrating good continuity of the high-grade gold mineralization from surface to a vertical depth of approximately 600 meters and the system remains open at depth. Further work is warranted to test the strike and depth extension of the KOD zone, along with a number of conductive anomalies.”

Gwillim Drilling Program

Doré Copper drilled two holes totaling 1,320 meters in December 2022 to follow up on positive results from two holes completed the prior year on the KOD zone (Table 1), located 300 meters south of the mined Gwillim Main zone (refer to news release April 21, 2022). Hole KOD-22-04 intersected two main mineralized zones, of 9.67 g/t Au over 5.3 meters, including 19.46 g/t Au over 2.1 meters, starting at a vertical depth of approximately 580 meters and 11.10 g/t Au over 3.0 meters, which are interpreted as zones B and C of the KOD mineralized structure (Figures 1 and 2, and Table 1). These gold intercepts in zones B and C are located approximately 190 and 215 meters, respectively, below hole KOD-21-03. In addition, a wide zone of low-grade mineralization, 0.86 g/t Au over 42.3 meters, was intersected from 460 to 502.3 meters. Assays are pending from 130 to 323.5 meters.

The KOD mineralized system remains open along strike and below 600 meters. Assays are pending for hole KOD-22-05, drilled on the same pad as KOD-22-04 and approximately 60 meters west-southwest of zone B intersected in KOD-22-04.

Gold mineralization in the KOD zone is found mainly in millimetric to centimetric quartz veins intersecting the massive basalt unit close to the contact with gabbroic or quartz-feldspar (“QFP”) dykes, which range from 30 centimeters to 10 meters. In some places, these veins can take the expression of silica flooding in basaltic pillow rims, associated with pyrite, pyrrhotite and chalcopyrite. Visible gold is occasionally observed.

A televiewer acoustic and optical survey was conducted in seven holes (87-KOD-20, 87-KOD-21, KOD-18-01, KOD-21-02, KOD-21-03, KOD-22-04 and KOD-22-05) to gain a better understanding of the orientation of the mineralized zones and the QFP dykes. The analysis and survey results will be available once the assays have been received for KOD-22-05.

In January 2023, Doré Copper and its joint venture partner contracted the services of Geotech to carry out a 146 line-kilometre airborne VTEM™ survey over the joint venture property. The flight lines were flown at a 75 meter spacing. The objective of the geophysical survey is to outline any conductors that could represent masses of sulphides. A number of anomalies have been identified in this survey and are expected to be followed up in the field starting in the summer of 2023. A significant, large anomaly is located on the KOD zone starting at a depth of 150 meters, just west of holes KOD-22-04 and 05 (shown on Figure 2).

Gwillim Property

The Gwillim property totals 486 ha. The western part of the property (385 ha) is under a 50/50 joint venture between Dore Copper and Argonaut Gold Inc. (through its wholly owned subsidiary Prodigy Gold Inc.) with Dore Copper being the operator. The eastern part of the property (102 ha) is 100% owned by Dore Copper.

Located on the joint venture land, the Gwillim mine operated between 1974 and 1976 and again from 1980 to 1984. In total 254,066 short tons were mined at a grade of 4.79 g/t Au¹. Most of the production came from the Main zone, which extended along strike for 122 meters with an average width of 2.6 meters and up to a depth of 114 metres.

In 1987, two high-grade intercepts of 7.6 meters at 38.0 g/t Au and 7.9 meters at 17.9 g/t Au were drilled by Greenstone Resources Ltd. at moderate depths of 200 to 300 meters at the KOD zone (300 meters south of the mined Gwillim Main zone)². A further 25 holes were drilled from the surface before a ramp was developed and the zone was further explored from underground in 1988 but not mined (some development through ore). In 1989, three more surface holes were drilled to depths of 400 meters with one hole confirming the extension of the high-grade mineralization beyond 300 meters vertical depth. An internal report from 1989 outlined a small historical resource (not NI 43-101 compliant) for the KOD zone. No other significant exploration activities are reported after this work. The historical information is being compiled and Figure 2 highlights a portion of the results from the historical drilling on the KOD zone.

Gwillim is hosted within the Roy group in the Bruneau Formation, in pillowed basalts and gabbroic sill. Mineralization is hosted predominantly within east-west, steeply dipping structures containing quartz-carbonate veins with limited amounts of massive sulphides. At KOD, there are two parallel east-west vein zones, approximately 50 meters apart, with the mineralization predominantly occurring in the northernmost vein. The thickness of the mineralization varies between 0.3 and 5.0 meters. The KOD zone is open along strike and at depth.

References:

¹Structural and Stratigraphic Control on Magmatic, Volcanogenic, and Shear Zone-Hosted Mineralization in the Chapais-Chibougamau Mining Camp, Northeastern Abitibi, Canada – Leclerc et al., 1992 Society of economic geologist inc. V 107, pp. 963-989.

² Diamond Drilling Report on the Gwillim Lake KOD Zone, Greenstone Resources (internal report) – Robert McIntosh, Project Geologist, Flanagan McAdam and Company, December 1989.

Drilling and Quality Control

Table 1. Gwillim Assays Highlights from the 2022 and 2021 Drill Program

Hole	From (m)	To (m)	Width¹ (m)	Au (g/t)	Zone
KOD-22-04	460.0	502.3	42.3	0.86	unnamed
including	487.6	491.0	3.4	3.10	“
	521.0	522.0	1.0	7.11	unnamed
	566.0	567.0	1.0	7.30	unnamed
	591.5	596.8	5.3	9.67	KOD Zone B, VG
including	591.5	593.6	2.1	19.46	“
	611.5	614.5	3.0	11.10	KOD Zone C
including	612.0	612.5	0.5	47.8	“
including	613.0	613.5	0.5	4.08	“
including	614.0	614.5	0.5	13.30	“
2021 Drilling Program (April 21, 2022 news release)
KOD-21-02	28.7	42.0	13.3	3.33	unnamed
including	28.7	29.2	0.5	23.2	unnamed
including	41.0	42.0	1.0	26.8	unnamed
	138.5	141.5	3.0	3.39	unnamed
	203.5	207.5	4.0	10.14	KOD Zone C
KOD-21-03	395.0	399.0	4.0	3.03	unnamed
	448.5	454.5	6.0	4.64	KOD Zone C
including	448.5	450.5	2.0	11.69	KOD Zone B

The true width of the structures intersected is estimated at approximately 55-60% of the downhole width.

**Figure 1.** **Surface plan of a portion of the Gwillim Property showing the location of the 2022 drill holes.**

Figure 2. Long-section of the KOD Zone B and C.

About Doré Copper Mining Corp.

Doré Copper Mining Corp. aims to be the next copper producer in Québec with an initial production target of +50 million pounds of copper equivalent annually by implementing a hub-and spoke operation model with multiple high-grade copper-gold assets feeding its centralized Copper Rand mill¹. The Corporation has delivered its PEA in May 2022 and is proceeding with a feasibility study.

For further information, please contact:

Ernest Mast
President and Chief Executive Officer
Phone: (416) 792-2229
Email:

Laurie Gaborit
VP Investor Relations
Phone: (416) 219-2049
Email:

For more information, please visit: www.dorecopper.com

Facebook: Doré Copper Mining
LinkedIn: Doré Copper Mining Corp.
Twitter: @DoreCopper
Instagram: @DoreCopperMining

Technical report titled “Preliminary Economic Assessment for the Chibougamau Hub-and-Spoke Complex, Québec, Canada” dated June 15, 2022, in accordance with National Instrument 43-101 Standards of Disclosure for Mineral Projects (“NI 43-101”). The Technical Report was prepared by BBA Inc. with several consulting firms contributing to sections of the study, including SLR Consulting (Canada) Ltd., SRK Consulting (Canada) Inc. and WSP Inc.
Sources for historic production figures: Economic Geology, v. 107, pp. 963–989 – Structural and Stratigraphic Controls on Magmatic, Volcanogenic, and Shear Zone-Hosted Mineralization in the Chapais-Chibougamau Mining Camp, Northeastern Abitibi, Canada by François Leclerc et al. (Lac Dore/Chibougamau mining camp) and NI 43-101 Technical Report on the Joe Mann Property dated January 11, 2016 by Geologica Groupe-Conseil Inc. for Jessie Ressources Inc. (Joe Mann mine).

Cautionary Note Regarding Forward-Looking Statements

Dore Copper announces grant of stock options and deferred share units

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Toronto, Ontario – May 15, 2023 – Doré Copper Mining Corp. (the “Corporation” or “Doré Copper“) (TSXV: DCMC; OTCQX: DRCMF; FRA: DCM) has granted 850,000 stock options to management, consultants and advisors. The stock options have an exercise price of $0.20 per share and a term of five years. The Company has also granted an aggregate total of 150,000 deferred share units (“DSUs”) to independent directors of the Company. The DSUs are payable in common shares of the Company upon the holder ceasing to be a director of the Company. Both issuances were done in accordance with the Company’s omnibus share incentive plan.

About Doré Copper Mining Corp.

For further information, please visit the Corporation’s website at www.dorecopper.com or refer to Doré Copper’s SEDAR filings at www.sedar.com or contact:

Ernest Mast
President and Chief Executive Officer
Phone: (416) 792-2229
Email:

Laurie Gaborit
VP Investor Relations
Phone: (416) 219-2049
Email:

Facebook: Doré Copper Mining
LinkedIn: Doré Copper Mining Corp.
Twitter: @DoreCopper
Instagram: @DoreCopperMining

Technical report titled “Preliminary Economic Assessment for the Chibougamau Hub-and-Spoke Complex, Québec, Canada” dated June 15, 2022, in accordance with National Instrument 43-101 Standards of Disclosure for Mineral Projects (“NI 43-101”). The Technical Report was prepared by BBA Inc. with several consulting firms contributing to sections of the study, including SLR Consulting (Canada) Ltd., SRK Consulting (Canada) Inc. and WSP Inc.
Sources for historic production figures: Economic Geology, v. 107, pp. 963–989 – Structural and Stratigraphic Controls on Magmatic, Volcanogenic, and Shear Zone-Hosted Mineralization in the Chapais-Chibougamau Mining Camp, Northeastern Abitibi, Canada by François Leclerc et al. (Lac Dore/Chibougamau mining camp) and NI 43-101 Technical Report on the Joe Mann Property dated January 11, 2016 by Geologica Groupe-Conseil Inc. for Jessie Ressources Inc. (Joe Mann mine).

Cautionary Note Regarding Forward-Looking Statements

Doré Copper announces up to $3 million non-brokered private placement of common shares and flow-through shares

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Not for distribution to United States news wire services or for dissemination in the United States

Toronto, Ontario – May 8, 2023 – Doré Copper Mining Corp. (the “Corporation” or “Doré Copper“) (TSX-V:DCMC; OTCQB:DRCMF; FRA:DRM) is pleased to announce a non-brokered private placement of: (i) up to 8,050,000 common shares in the capital of the Corporation (the “Common Shares“) at a price of $0.20 per Common Share for gross proceeds of up to $1,610,000; (ii) up to 833,336 common shares in the capital of the Corporation that will qualify as “flow-through shares” within the meaning of subsection 66(15) of the Income Tax Act (Canada) and section 359.1 of the Taxation Act (Québec) (the “Traditional Flow-Through Shares“) at a price of $0.24 per Traditional Flow-Through Share for gross proceeds of up to $200,000.64; and (iii) up to 2,875,000 common shares in the capital of the Corporation that will qualify as “flow-through shares” within the meaning of subsection 66(15) of the Income Tax Act (Canada) and section 359.1 of the Taxation Act (Québec) (the “Charitable Flow-Through Shares” and together with the Traditional Flow-Through Shares, the “Flow-Through Shares“) at a price of $0.415 per Charitable Flow-Through Share for gross proceeds of up to $1,193,125, for aggregate gross proceeds to the Corporation of up to $3,003,125.64 (collectively, the “Offering“).

The net proceeds from the sale of the Common Shares will be used for exploration and development activities and for working capital and general corporate purposes. The Corporation will use an amount equal to the gross proceeds received by the Corporation from the sale of the Flow-Through Shares, pursuant to the provisions in the Income Tax Act (Canada), to incur, directly or indirectly, expenses (“Qualifying Expenditures“) related to the Corporation’s projects in Québec, on or before December 31, 2024, that are eligible “Canadian exploration expenses” (as defined in the Income Tax Act (Canada)), which, in the case of the Traditional Flow-Through Shares, will qualify as “flow-through mining expenditures” (as defined in the Income Tax Act (Canada)), and, in the case of the Charitable Flow-Through Shares, will qualify as “flow-through critical mineral mining expenditures” (as defined in the Income Tax Act (Canada)), and renounce all the Qualifying Expenditures in favour of the applicable subscribers of the Flow-Through Shares effective December 31, 2023. In addition, with respect to Québec resident subscribers who are eligible individuals under the Taxation Act (Québec), the Canadian exploration expenses will also qualify for inclusion in the “exploration base relating to certain Québec exploration expenses” within the meaning of section 726.4.10 of the Taxation Act (Québec) and for inclusion in the “exploration base relating to certain Québec surface mining expenses or oil and gas exploration expenses” within the meaning of section 726.4.17.2 of the Taxation Act (Québec).

In connection with the Offering, certain arm’s-length parties may receive a cash finder’s fee payment and/or warrants to purchase common shares in the capital of the Corporation in consideration of securities that are sold to subscribers introduced by such parties. Any cash finder’s fee payment and/or warrants will be subject to the approval of, and will be issued in accordance with the rules of, the TSX Venture Exchange.

The Offering is expected to close on or about June 1, 2023, or such other date as the Corporation may determine and is subject to certain conditions including, but not limited to, the receipt of all necessary regulatory and other approvals including the acceptance of the TSX Venture Exchange

The Offering will be made by way of private placement in each of the provinces of Canada pursuant to applicable exemptions from the prospectus requirements and, in the case of the Common Shares, such other jurisdictions, in each case in accordance with all applicable laws, provided that no prospectus, registration statement or other similar document is required to be filed in such jurisdiction. The securities issued under the Offering will be subject to a four-month hold period under applicable Canadian securities laws.

The securities offered have not been, nor will they be, registered under the United States Securities Act of 1933, as amended, or any state securities law, and may not be offered, sold or delivered, directly or indirectly, within the United States, or to or for the account or benefit of U.S. persons, absent registration or an exemption from such registration requirements. This news release does not constitute an offer to sell or the solicitation of an offer to buy nor shall there be any sale of securities in any state in the United States in which such offer, solicitation or sale would be unlawful.

About Doré Copper Mining Corp.

For further information, please visit the Corporation’s website at www.dorecopper.com or refer to Doré Copper’s SEDAR filings at www.sedar.com or contact:

Technical report titled “Preliminary Economic Assessment for the Chibougamau Hub-and-Spoke Complex, Québec, Canada” dated June 15, 2022, in accordance with National Instrument 43-101 Standards of Disclosure for Mineral Projects (“NI 43-101”). The Technical Report was prepared by BBA Inc. with several consulting firms contributing to sections of the study, including SLR Consulting (Canada) Ltd., SRK Consulting (Canada) Inc. and WSP Inc.
Sources for historic production figures: Economic Geology, v. 107, pp. 963–989 – Structural and Stratigraphic Controls on Magmatic, Volcanogenic, and Shear Zone-Hosted Mineralization in the Chapais-Chibougamau Mining Camp, Northeastern Abitibi, Canada by François Leclerc et al. (Lac Dore/Chibougamau mining camp) and NI 43-101 Technical Report on the Joe Mann Property dated January 11, 2016 by Geologica Groupe-Conseil Inc. for Jessie Ressources Inc. (Joe Mann mine).

For further information, please contact:

Ernest Mast
President and Chief Executive Officer
Phone: (416) 792-2229
Email:

Laurie Gaborit
VP Investor Relations
Phone: (416) 219-2049
Email:

For more information, please visit: www.dorecopper.com

Facebook: Doré Copper Mining
LinkedIn: Doré Copper Mining Corp.
Twitter: @DoreCopper
Instagram: @DoreCopperMining

Cautionary Note Regarding Forward-Looking Statements

This news release includes certain “forward-looking statements” under applicable Canadian securities legislation. Forward-looking statements include, but are not limited to, statements with respect to the terms of the Offering, the use of proceeds of the Offering, the timing and ability of the Corporation to close the Offering, the timing and ability of the Corporation to receive necessary regulatory approvals, including the acceptance of the Offering from the TSX Venture Exchange, the renunciation to the purchasers of the Flow-Through Shares and timing thereof, the tax treatment of the Flow-Through Shares, and the plans, operations and prospects of the Corporation. Forward-looking statements are necessarily based upon a number of estimates and assumptions that, while considered reasonable, are subject to known and unknown risks, uncertainties and other factors which may cause the actual results and future events to differ materially from those expressed or implied by such forward-looking statements. Such factors include, but are not limited to: general business, economic, competitive, political and social uncertainties; delay or failure to receive regulatory approvals; the price of gold and copper; and the results of current exploration. There can be no assurance that such statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements. The Corporation disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.

Doré Copper to Drill High Priority Copper-Gold Targets This Summer in Chibougamau, Quebec

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Toronto, Ontario – May 3, 2023 – Doré Copper Mining Corp. (the “Corporation” or “Doré Copper“) (TSXV: DCMC; OTCQX: DRCMF; FRA: DCM) is pleased to announce its plans to drill several high priority copper-gold targets in the Central Chibougamau mining camp, located in proximity to its existing Copper Rand mill, near Chibougamau, Québec (Figure 1). The drilling program is scheduled to start at the end of June.

High Priority Drilling Targets:

Jaculet (Figure 2)

The Jaculet mine, located 2.5 kilometers by road from the Copper Rand mill, was in operation from 1960 to 1971 and produced a total of 1,091,000 tonnes at 1.84% Cu, 1.44 g/t Au and 6.85 g/t Ag (20,074 tonnes of Cu and 1.57 tonnes Au)¹. Jaculet was mined to a depth of 366 meters (1,200 feet) and the shaft was deepened to 500 meters (1,650 feet) in 1972. The Jaculet mineralized system consists of two distinct shear zones, known as Zone 1 and Zone 2, which both remain open at depth with very little development below 366 meters.

Two surface holes completed in 1956 by Chibougamau Jaculet Mines Ltd. intersected Zone 1 at a vertical depth of approximately 400 meters. Hole V17 and V17A (wedge from V17, located approximately 50 meters to the east) intersected 4.55% Cu and 0.86 g/t Au over 6.7 meters and 4.25% Cu and 0.59 g/t Au over 6.4 meters, respectively.

Doré Copper plans to drill two holes for a total of 1,300 meters. The first hole will test the potential down plunge extension of holes V17 and V17A in Zone 1. The second hole will test another potential ore shoot located approximately 400 meters to the west.

The Jaculet deposit is defined by two distinct subparallel shear zones, known as Zone 1 and Zone 2, separated by approximately 200 meters, where the veins within both zones typically range from 91 to 137 meters in strike length. Zone 1 extends for approximately 500 meters and has an average strike of 290° with a northerly dip ranging from 55° to near vertical. Mineralization in Zone 1 consists of chalcopyrite and minor pyrite within the sheared and altered gabbroic anorthosite. Zone 2 extends for approximately 670 meters in length and is oriented at 80° north dipping 80-85° to the south. Mineralization consists of stringers of pyrite with erratic lenses of chalcopyrite associated with siderite, sericite and chloritoid.

Cedar Bay Southwest Zone Extension (Figure 3)

The Southwest Zone, located 300 meters southwest of the Cedar Bay Main Zone, was partially developed by Campbell Chibougamau Mines Limited up to the 200-meter (650-feet) level, right at the property limit with Patino Mining. The potential extension of the Cedar Bay Southwest Zone along strike to the southeast was never tested by Patino Mining and subsequent companies that controlled that ground. In total, approximately 800 meters of strike length have not been tested up to the Lac Doré Fault.

Doré Copper plans to drill two holes from the same pad for a total of 1,500 meters to test the potential southeast extension of the Cedar Bay Southwest Zone.

The Cedar Bay mine operated from 1958 to 1990 and produced 3.9 million tonnes grading 1.56% Cu and 3.22 g/t Au¹. The ore from the mine was processed at the Copper Rand mill located 5 kilometers by road. The deposit was mined to a depth of 670.5 meters and the existing shaft extends to a depth of 1,036 meters. Doré Copper, while private, completed four holes (including wedges) totaling 4,842 meters in 2018 and reported an Indicated resource of 130,000 tonnes at 9.44 g/t Au and 1.55% Cu, and an Inferred resource of 230,000 tonnes at 8.32 g/t Au and 2.13% Cu (effective date of December 31, 2018)². During 2020, the Corporation completed 9,025 meters of drilling and successfully extended a number of mineralized lenses (the 10-20A and 10-20B).

**Figure 1. Plan View of Copper Rand Property Showing the Jaculet and Cedar Bay SW Targets**

**Figure 2. Plan View and Long Section Showing the Jaculet Target**

Figure 3. Plan View and Long Section Showing the Cedar Bay Southwest Zone Extension

Qualified Person

About Doré Copper Mining Corp.

Doré Copper Mining Corp. aims to be the next copper producer in Québec with an initial production target of +50 million pounds of copper equivalent annually by implementing a hub-and spoke operation model with multiple high-grade copper-gold assets feeding its centralized Copper Rand mill². The Corporation has delivered its PEA in May 2022 and is proceeding with a feasibility study.

The Corporation has consolidated a large land package in the prolific Lac Doré/Chibougamau and Joe Mann mining camps that has historically produced 1.6 billion pounds of copper and 4.4 million ounces of gold³. The land package includes 13 former producing mines, deposits and resource target areas within a 60-kilometer radius of the Corporation’s Copper Rand Mill.

For further information, please contact:

Ernest Mast
President and Chief Executive Officer
Phone: (416) 792-2229
Email:

Laurie Gaborit
VP Investor Relations
Phone: (416) 219-2049
Email:

For more information, please visit: www.dorecopper.com

Facebook: Doré Copper Mining
LinkedIn: Doré Copper Mining Corp.
Twitter: @DoreCopper
Instagram: @DoreCopperMining

Sources for historic production figures: Lacroix, S., Doyon, M., Perreault, S., Nantel, S., Gaudreau, R., Dussault, C.,and Morin, R., 1997, Rapport des géologues résidents sur l’activité minière régionale en 1996: Ministère des Ressources naturelles du Québec Report DV97-01, 102 p.
Technical report titled “Preliminary Economic Assessment for the Chibougamau Hub-and-Spoke Complex, Québec, Canada” dated June 15, 2022, in accordance with National Instrument 43-101 Standards of Disclosure for Mineral Projects (“NI 43-101”). The Technical Report was prepared by BBA Inc. with several consulting firms contributing to sections of the study, including SLR Consulting (Canada) Ltd., SRK Consulting (Canada) Inc. and WSP Inc.
Sources for historic production figures: Economic Geology, v. 107, pp. 963–989 – Structural and Stratigraphic Controls on Magmatic, Volcanogenic, and Shear Zone-Hosted Mineralization in the Chapais-Chibougamau Mining Camp, Northeastern Abitibi, Canada by François Leclerc et al. (Lac Dore/Chibougamau mining camp) and NI 43-101 Technical Report on the Joe Mann Property dated January 11, 2016 by Geologica Groupe-Conseil Inc. for Jessie Ressources Inc. (Joe Mann mine).

Cautionary Note Regarding Forward-Looking Statements

Dore Copper announces positive results from ore sorting tests at Corner Bay

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Toronto, Ontario – April 18, 2023 – Doré Copper Mining Corp. (the “Company” or “Doré Copper“) (TSXV: DCMC; OTCQX: DRCMF; FRA: DCM) is pleased to announce positive results from ore sorting test work for its flagship Corner Bay high-grade copper-gold project located approximately 55 kilometers by road from the Corporation’s Copper Rand mill, near Chibougamau, Québec.

Steinert was commissioned to complete ore sorting tests at their facility in Kentucky, United States, using a XRT sensor (X-ray transmission) and a laser sensor on a spatially diverse sample from the Corner Bay deposit.

The results support the first ore sorting test work that was completed for the preliminary economic assessment (“PEA”) and further confirm the effectiveness of utilizing ore sorting technology to improve the processed grade and reduce the mill feed tonnage.

Highlights of Ore Sorting Test

Copper grade increase of 77%, from 2.20% to 3.93%
Recovery of 93.6% Cu
Reject material contains 48% of the initial mass with a copper grade of 0.30%
Gold, silver and molybdenum grade also upgraded with excellent recoveries and low concentration in reject
Cost and environmental benefits include:
- Lower transportation costs and greenhouse gas emissions (GHGs) due to a reduction of transported material from the mine to the mill
- Lower energy consumption at the mill due to higher feed grade and hardness decrease of the feed material
- Less tailings produced
- Additional capacity of the mill to treat additional materials
- Waste material at the mine site (reject material) to be used as backfill

Commenting on the results of our second ore sorting tests, Ernest Mast, President & CEO, stated, “This test work further validates the favorable mineralogy of the Corner Bay deposit for ore sorting technology and confirms the prior ore sorting results obtained from the Corner Bay stockpile, which were included in the PEA. Preliminary ore sorting test work at Devlin in 2022, our secondary hub-and-spoke asset, had also indicated positive results. Ore sorting of the Corner Bay and Devlin will remain part of any future development scenarios due to its economic and sustainability benefits.

Ore Sorting Tests

As a first step, the Steinert XRT was calibrated with high, medium and low grade and waste samples representative of the selected drill core samples of the Corner Bay deposit (Figure 1). A continuous production run was done on the 202 kg sample. The testing was done with three passes with the explicit aim of generating grade vs recovery vs mass pull curves, with each pass related to an adjustment in the sensitivity. Results are shown in the table below.

The sum of the two pre-concentrates (Test 2 in table below) represented 52.5% of the feed mass at a grade of 3.93% Cu (an increase of 77%) and resulted in a cumulative copper recovery of 93.6%. The final reject portion represented 47.5% of the feed mass at a grade of 0.30% Cu, representing 6.4% of the copper fed in the sorter. In addition, all other metals to be recovered (gold, silver and molybdenum) showed an upgrade in grade:

Gold grade: from 0.17 g/t to 0.29 g/t
Silver grade: from 7.91 g/t to 13.82 g/t
Molybdenum grade: from 0.037% to 0.064%

Lastly, the arsenic grade of the two pre-concentrates was found to be 12ppm which leads to a final concentrate with very low levels of arsenic.

Minimal fines were generated in the test work and were not considered for calculations. In practice, the fine material from the mining and crushing would join the pre-concentrate in the ore sorting circuit and would result in a higher recovery than indicated in the test work. In addition, as the sorter can be calibrated to control the final reject grade, a higher copper feed grade would result in higher recoveries.

Corner Bay Ore Sorting Results Cumulative Results
Result (cumulative)	Weight (kg)	Mass Recovery	Cu (%)	Cu Rec.	Au (g/t)	Au Rec.	Ag (g/t)	Ag Rec.	Mo (%)	Mo Rec.
1	70	34.7%	5.18	81.4%	0.37	77.2%	17.90	78.4%	0.082	77.2%
2	106	52.5%	3.93	93.5%	0.29	92.2%	13.82	91.7%	0.064	91.7%
3	175	86.6%	2.52	99.0%	0.19	98.4%	9.00	98.6%	0.042	98.2%
4	202	100.0%	2.20	100.0%	0.17	100.0%	7.91	100.0%	0.037	100.0%

Corner Bay Composite Sample

A spatially diverse composite sample was prepared by Doré Copper by selecting 34 diamond drill holes which intersected mineralized zones within the Corner Bay Mineral Resource estimate (“MRE”) (Figure 1; one mineralized sample was outside the current MRE). The core material selected represented different rock types: semi and massive sulphides, quartz veins, diorite dyke, and fresh and altered anorthosite. The drill core was sampled by cutting a quarter split NQ core. The longer pieces of quarter split core were further manually broken down into 1 to 3 inches length to simulate a crushed product. The composite sample weighted 202 kg and graded 2.20% Cu (Test 4 in table above) and included an 18% external mining dilution from the hanging wall and foot wall of the mineralized interval.

The PEA did not include the silver and molybdenum content (currently excluded from the MRE). The composite sample indicated silver and molybdenum grades that would be expected in the deposit (Test 4 in table above).

Substantial Benefits of Ore Sorting

As already indicated in the Company’s PEA (May 10, 2022), ore sorting technology offers substantial benefits versus conventional processing. It will reduce operating costs for milling, flotation and tailings management due to a significant rejection of low-grade material. Sorting is expected to decrease the hardness of the ore sent to the mill (lower Bond Work Index of the sorter pre-concentrate product compared to the feed), and so, non-negligeable energy savings could be foreseen. The commensurate increase in the head grade of the ore that will report to the flotation circuit has the potential to result in improved metallurgical recoveries in the flotation circuit and higher concentrate grades.

Further metallurgical and environmental testing, including comminution, flotation and leachability testing, will be carried out to progress the feasibility study and ongoing permitting.

ore sorting at Corner Bay — **Figure 1. Sample Location for Composite Sample Used in Ore Sorting Test**

Qualified Person

About Steinert

Steinert is a global provider of intelligent sorting and separation solutions for the recycling and mining industries. Steinert, has over 125 years of experience, excels at providing customers technologically advanced sorting solutions via its extensive process and industry knowledge.

Steinert has been a pioneer in the market, consistently pursuing and achieving its goal of supporting customers by being a global technology leader. Founded in 1889 in Cologne, Germany, Steinert is the only manufacturer of magnetic separators that has further advanced its classic field of activity and established sensor-based sorting as a new technology in its product development.

For more information, please visit: https://steinertglobal.com/

About Doré Copper Mining Corp.

The Company has consolidated a large land package in the prolific Lac Doré/Chibougamau and Joe Mann mining camps that has historically produced 1.6 billion pounds of copper and 4.4 million ounces of gold² The land package includes 13 former producing mines, deposits and resource target areas within a 60-kilometre radius of the Company’s Copper Rand Mill.

For further information, please contact:

Ernest Mast
President and Chief Executive Officer
Phone: (416) 792-2229
Email:

Laurie Gaborit
VP Investor Relations
Phone: (416) 219-2049
Email:

For more information, please visit: www.dorecopper.com

Facebook: Doré Copper Mining
LinkedIn: Doré Copper Mining Corp.
Twitter: @DoreCopper
Instagram: @DoreCopperMining

Technical report titled “Preliminary Economic Assessment for the Chibougamau Hub-and-Spoke Complex, Québec, Canada” dated June 15, 2022, in accordance with National Instrument 43-101 – Standards of Disclosure for Mineral Projects. The Technical Report was prepared by BBA Inc. with several consulting firms contributing to sections of the study, including SLR Consulting (Canada) Ltd., SRK Consulting (Canada) Inc. and WSP Inc.
Sources for historic production figures: Economic Geology, v. 107, pp. 963–989 – Structural and Stratigraphic Controls on Magmatic, Volcanogenic, and Shear Zone-Hosted Mineralization in the Chapais-Chibougamau Mining Camp, Northeastern Abitibi, Canada by François Leclerc et al. (Lac Dore/Chibougamau mining camp) and NI 43-101 Technical Report on the Joe Mann Property dated January 11, 2016 by Geologica Groupe-Conseil Inc. for Jessie Ressources Inc. (Joe Mann mine). Doré Ramp November 1992 Summary, internal Westminer Report.

Cautionary Note Regarding Forward-Looking Statements

This news release includes certain “forward-looking statements” under applicable Canadian securities legislation. Forward-looking statements include predictions, projections and forecasts and are often, but not always, identified by the use of words such as “seek”, “anticipate”, “believe”, “plan”, “estimate”, “forecast”, “expect”, “potential”, “project”, “target”, “schedule”, “budget” and “intend” and statements that an event or result “may”, “will”, “should”, “could” or “might” occur or be achieved and other similar expressions and includes the negatives thereof. All statements other than statements of historical fact included in this news release, including, without limitation, statements with respect to the timing and ability of the Company to receive necessary regulatory approvals, the Company’s ability to meet its production target, the commencement, timing and completion of a feasibility study, and the plans, operations and prospects of the Company and its properties are forward-looking statements. Forward-looking statements are necessarily based upon a number of estimates and assumptions that, while considered reasonable, are subject to known and unknown risks, uncertainties and other factors which may cause actual results and future events to differ materially from those expressed or implied by such forward-looking statements. Such factors include, but are not limited to, actual exploration results, changes in project parameters as plans continue to be refined, future metal prices, availability of capital and financing on acceptable terms, general economic, market or business conditions, uninsured risks, regulatory changes, delays or inability to receive required regulatory approvals, health emergencies, pandemics and other exploration or other risks detailed herein and from time to time in the filings made by the Company with securities regulators. Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ from those described in forward-looking statements, there may be other factors that cause such actions, events or results to differ materially from those anticipated. There can be no assurance that such statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements. The Company disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.