Doré Copper Provides Exploration and Development Update of Its High-Grade Copper-Gold Properties in Chibougamau, Quebec

TORONTO, April 08, 2021 (GLOBE NEWSWIRE) -- Doré Copper Mining Corp. (the "Corporation" or "Doré Copper") (TSXV: DCMC; OTCQB: DRCMF; FRA: DCM) is pleased to provide an update on its exploration and development activities of its high-grade copper-gold projects in and near the Chibougamau mining camp in northwestern Québec, Canada. Exploration activities will continue into July 2021 with a plan to complete over 25,000 meters of drilling.

Ernest Mast, President and CEO, commented, “The exploration program for 2021 provides the Corporation with numerous opportunities to add value. We are confident in increasing the size of the mineral resources at Corner Bay, establishing a maiden mineral resource at Joe Mann, and confirming additional high-grade mineralization at Cedar Bay in preparation for a preliminary economic assessment of a hub-and-spoke model by Q4 2021. Our plans also include drilling the newly acquired Norbeau property and test new geological targets on our land package. The detailed geophysical survey currently underway shall give us a better understanding of our deposits and potentially provide new drilling targets for the latter half of 2021.”

Corner Bay

• 15,000 m drilling program in progress: 11 holes completed and a minimum of 5 holes remaining.
• Target areas include: north side of Main Vein and Deep Main Vein Lens, south side of Main Vein following up on positive results from the 2020 drilling program (refer to news release dated September 17, 2020), south side of Main Vein above the dyke, and a connection of the Main Vein below the dyke with the Deep Main Vein Lens (Figure 1 shows the approximate location of the drill hole intercepts on a long section of the Corner Bay deposit).
• Testing another vein structure approximately 250 meters west of the Main Vein at a depth between 200 and 500 meters.   
• Expecting an increase from current Mineral Resource Estimate (“MRE”) with the 2020-21 drilling campaigns.
• MRE update at end of Q2 2021.
  

Joe Mann

• Completed re-sampling of Far West Zone and expecting results in Q2 2021.
• Contracting an established geological consulting firm to start a maiden MRE of the Main and West Zones. Exploration plans for 2021 will be finalized upon the results for the Far West Zone and the Joe Mann MRE.
• Permitting preparation for mine dewatering is underway.
  

Cedar Bay

• 1,800 meters drilling program for Q2 2021 at the Copper Cliff crown pillar and Zone 21 (both adjacent to Cedar Bay) to follow up on positive 2020 drill results (refer to news release August 5, 2020).
• Significant intercept from Copper Cliff crown pillar included 7.3% Cu and 13.6 g/t Au over a true width of 2.3 meters (hole CDR-20-04C) at a vertical depth of 34 meters.
• Zone 21 is the northeasternmost vein at Cedar Bay (or the southwesternmost at Copper Cliff) and was mined over a strike length of 150-200 meters, from 85 to 490 meters from surface.
• Western half of Zone 21 is on Doré Copper land. Hole CDR-20-07 intersected 2.25 meters grading 4.9% Cu, 0.46 g/t Au and 8.6 g/t Ag approximately 40 meters beneath the lowest mining level.
• Permitting preparation for mine dewatering is underway.