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4. Sales of Products: Sales of products by metal (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Details        
Gold sales $ 2,253,431 $ 1,654,334 $ 6,256,461 $ 4,629,816
Silver sales 5,756 2,593 20,078 6,881
Smelter and refining charges (160,338) (100,857) (410,831) (355,296)
Total $ 2,098,849 $ 1,556,070 $ 5,865,708 $ 4,281,401