Projects - Doré Copper Mining Corp

Hub-and Spoke Re-development Opportunity

Doré Copper is focusing on a hub-and-spoke development strategy* with its Copper Rand mill serving as the ‘hub’ of the operation. The hub-and-spoke model with established infrastructure provides the following benefits:

  • Low execution risk
  • Lower capital expenditures
  • Shorter permitting requirements
  • Project pipeline in place to feed mill
  • Potential toll milling centre (spare mill capacity)

*The technical feasibility and economic viability of the projects has not yet been established for the hub & spoke operation model.

Corner Bay

Copper & Gold

Joe Mann

Gold & Copper

Cedar Bay

Gold & Copper

Copper Rand

Copper & Gold

  PEA MAY 10, 2022

Corner Bay Cedar Bay Joe MannCopper Rand Devlin Gwillim Norbeau

Doré Copper has consolidated a large land package of brownfield projects in and near Quebec’s Chibougamau prolific mining camp that has produced 1.6 B lbs of copper and 4.4 M oz of gold. The properties include 13 former mines, deposits and resource target areas, all within a 60 km radius of its Copper Rand mill.

Copper Rand mine and mill


On May 10, 2022, Doré Copper reported the results a Preliminary Economic Assessment (“PEA“) for a hub-and-spoke complex with the high-grade Corner Bay copper-gold deposit as its main underground mine along with the Devlin copper deposit and the former Joe Mann gold mine providing feed to its Copper Rand mill.

The PEA demonstrated attractive project economics with optionality for expansion into a significantly larger operation, re-establishing the Chibougamau mining camp as a long-life copper and gold producer.


The PEA envisions a hub-and-spoke model operation starting first with the underground development of the Devlin deposit via a ramp and secondly with the underground development of the Corner Bay deposit (main asset) via a ramp. Once the Devlin deposit is mined out (approximately 4 years), production at the Joe Mann mine would start and be funded out of cash flow from operations. Joe Mann benefits from an existing headframe and shaft, including all surface infrastructures. 

A fixed crushing circuit and ore sorter plant (XRT) would be installed at Corner Bay and would reject the low-grade and dilution material from the Devlin and Corner Bay mines. The high-grade material would be transported by trucks to the refurbished and optimized Copper Rand mill. The filtered tailings would be transported to a dry stack tailings facility, which uses part of the footprint at the existing TMF.

The copper and gold concentrate produced would be transported to the port of Québec City for onward shipping to international smelters, or to a local smelter. Ocean Partners Ltd. has the off-take agreement (treatment and refining charges terms are within standard market rates).


Technical Report and Qualified Persons 

The PEA 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 (Canada) Inc.

>> The technical report is available here.

The Company cautions that the results of the PEA are preliminary in nature and include inferred mineral resources that are considered too speculative geologically to have economic considerations applied to them to be classified as mineral reserves. There is no certainty that the results of the PEA will be realized.

Summary of PEA Results

DescriptionUnitBase Case1 24-month Trailing Avg
Metal Prices/FX

Copper (Cu)US$/lb3.75
Gold (Au)US$/oz1,820
Currency Exchange RateUSD/CAD1.28
Production Data

Resource TonnesT9,150,710
Copper Equiv. Grade%2.98
Daily Mill ThroughputTpd1,350
Annual Processing RateKtpa490
Mine LifeYears10.5
Avg Annual Production (in concentrate) Mlbs CuEq53
Operating Costs (LOM avg)

Total Operating Costs2C$/t mined106

C$/t milled186
All-in Sustaining Costs3,4US$/lb CuEq2.24
Capital Costs

Initial CapitalC$M180.6
LOM Sustaining CapexC$M402.4
Financial Analysis (unlevered)

Pre-Tax NPV 8%C$M367
Pre-Tax IRR%30.7
After-Tax NPV 8%C$M193
After-Tax IRR%22.1
Payback Period (Production Start)years5.5
  1. Base case metal prices based on 24-month trailing average from March 31, 2022.
  2. Total operating costs include mining, processing, tailings, surface infrastructures, transport, and G&A costs.
  3. AISC includes cash operating costs, sustaining capital expenses to support the on-going operations, concentrate transport and treatment charges, royalties and closure and rehabilitation costs divided by copper equivalent pounds produced.
  4. AISC is a non-IFRS financial performance measures with no standardized definition under IFRS. Refer to note at end of this news release.