22. Supplementary Cash Flow Information During the years ended December 31, 2021, 2020, and 2019, other operating adjustments and write-downs within the net cash provided by operations on the Consolidated Statements of Cash Flows consisted of the following: | | | | | | | | | | | | For the year ended December 31, | | | 2021 | | 2020 | | 2019 | | | | (in thousands) | | | | Unrealized loss (gain) on gold and silver rounds | | $ | 53 | | $ | (170) | | $ | (671) | Realized loss (gain) on gold and silver rounds | | | 2 | | | (1,003) | | | - | Unrealized foreign currency exchange loss (gain) | | | 493 | | | 105 | | | (19) | Loss on disposition of fixed assets | | | 37 | | | 3 | | | 12 | Increase (decrease) in reserve for inventory | | | 175 | | | (148) | | | 885 | Stock-based compensation related to restructuring | | | - | | | 809 | | | - | Unrealized loss on zinc zero cost collar | | | 1,844 | | | - | | | - | Other | | | 105 | | | - | | | 98 | Total other operating adjustments | | $ | 2,709 | | $ | (404) | | $ | 305 |
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