Corner Bay - Doré Copper Mining Corp

Corner Bay

Location55 km by road south of Chibougamau, QC
Ownership100% Dore Copper
HistoryDevelopment: ramp to 115 m; bulk sample of ~36k tonnes averaging 2.48% Cu and 0.44 g/t Au
CommoditiesCopper and gold
Current StatusStarting Feasibility Study
Mineral Resources (2022)Indicated: 2.68 Mt @ 2.66% Cu and 0.26 g/t Au, containing 157 M lbs of copper and 22,000 oz of gold
Inferred: 5.86 Mt @ 3.43% Cu and 0.27 g/t Au, containing 443 M lbs of copper and 51,000 oz of gold


Dore Copper, through its wholly-owned subsidiary CBAY Minerals Inc., holds a 100% interest in the Corner Bay Project located in the vicinity of Chibougamau, Québec, approximately 55 km by road from its Copper Rand mill. 

Corner Bay is a significant high-grade copper-gold deposit located on the south flank of the Lac Dore Complex. Its was discovered in the early 1980s and accessed by a ramp to 115 meters in 2008. No past production is reported although an underground bulk development sample of approximately 36,000 tonnes was mined and processed at the Copper Rand mill in 2008. Mill recoveries were 94.4% for copper and 81.5% for gold.

Drilling programs by the Corporation from 2017 to 2022 have successfully expanded the deposit along strike and down plunge. The Corner Bay deposit remains open at depth.

Dore Copper completed a preliminary economic assessment (“PEA”) in May 2022. The PEA contemplates the re-development plan of a hub-and-spoke operation model with Corner Bay as the main feed to the Corporation’s centralized Copper Rand mill, supplemented by the Devlin and Joe Mann deposits.





Long Section of Corner Bay – Looking West
Surface Geology
Location map
Surface Infrastructure
CB-21-32_5.5m at 3.46% Cu
CB-21-32W1_6.8 meters at 3.67% Cu.