Asset Retirement Obligations (Details Narrative) $ in Millions |
9 Months Ended |
|---|---|
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Sep. 30, 2020
USD ($)
| |
| Estimated Future Cash Undiscounted Amount | $ 29.4 |
| Estimated future cost to complete reclamation including inflation | $ 39.5 |
| Minimum [Member] | |
| Discount Rate Of Asset Retirement Obligations | 0.33% |
| Maximum [Member] | |
| Discount Rate Of Asset Retirement Obligations | 7.25% |
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