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4. Sales of Products: Schedule of sales of products by metal (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Details        
Gold sales $ 1,461,249 $ 1,688,454 $ 2,980,560 $ 2,901,575
Silver sales 2,905 3,562 5,946 7,120
Smelter and refining charges (139,656) (124,362) (261,175) (216,367)
Total $ 1,324,498 $ 1,547,654 $ 2,725,331 $ 2,692,328