- Doré Copper (DCMC) prepares its plans to dewater the former Joe Mann Gold mine and Cedar Bay Copper-Gold mine
- Doré recently conducted water sampling tests down each shaft which returned positive results
- In November of 2020, the Cedar Bay mine ceased operations in 1990 after having produced 3.9 million tonnes (Mt) of ore grading 1.63 percent Cu and 3.21 g/t Au
- In February 2021, the Joe Mann mine ceased operation in 2007 after having produced 1.2 million ounces of gold
- With the assessment, the Corporation will be submitting an application, in April, for attestation of exemption to the Québec Ministry of Environment and Fight Against Climate Change.
- Doré Copper Mining (DCMC) is up 2.99 percent and is trading at C$0.65 2:39 pm EST
Doré Copper Mining (DCMC) is pleased to announce preparations for the dewatering of the former Joe Mann and Cedar Bay mines.
Doré recently conducted water sampling tests down each shaft which returned positive results.
In November of 2020, the Cedar Bay mine ceased operations in 1990 after having produced 3.9 million tonnes (Mt) of ore grading 1.63 percent Cu and 3.21 g/t Au.
Water was sampled down the shaft every 100 meters down to the deepest development level of 760 meters for a total of seven samples.
Video inspection of the shaft indicated no deformation with rails intact and in place.
Back in February 2021, the Joe Mann mine ceased operation in 2007 after having produced 1.2 million ounces of gold (4.75 Mt of ore grading 8.26 g/t Au and 0.25 percent Cu).
Water was sampled down the shaft every 100 meters down to the deepest development level of 1,150 meters for a total of 12 samples.
Video inspection indicated that the shaft is in excellent condition. The average pH was 7.35, indicating slightly basic water chemistry.
Heavy metals were low in concentration with many metals below detection limits. Copper and zinc concentrations were below detection limits in the majority of the samples.
Ernest Mast, President and CEO, stated: “Following the completion of the dewatering assessment, we will be in a position to make a decision on the dewatering of these mines.”
“The dewatering would provide Doré Copper underground access to the lowest levels of the mines and accelerate our exploration and development timeline while lowering our drilling costs and improving drilling accuracy,” concluded Mast.
Following the positive results of the water samples, Doré Copper will commence the design of the dewatering programs.
This assessment will include the costs and timelines of the dewatering, water treatment process, final treated water destination and precipitate disposal for each mine.
The work is expected to be completed by year-end.
Concurrently with the assessment, the Corporation will be submitting an application, in April, for attestation of exemption to the Québec Ministry of Environment and Fight Against Climate Change.
Doré Copper Mining is a copper-gold explorer and developer in the Chibougamau area of Québec, Canada.
Doré Copper has consolidated a large land package in the prolific Lac Doré/Chibougamau mining camp that has historically produced 1.6 B lbs of copper and 3.2 M oz of gold.
Doré Copper Mining (DCMC) is up 2.99 percent and is trading at C$0.65 2:39 pm EST.
