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14. Forward Gold Contracts: Change in balance forward gold contracts (Details) | 12 Months Ended
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Dec. 31, 2018 USD ($)
Details |
Change in balance for the forward gold contracts beginning | $ 920,579
Change in balance for the forward gold contracts conversion | (492,784)
Change in balance for the forward gold contracts cash payments | (185,798)
Change in balance for the forward gold contracts gold purchased | (257,981)
Change in balance for the forward gold contracts, change in fair value | 15,984
Change in balance for the forward gold contracts ending | $ 0

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