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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS AND SUPPLEMENTAL CASH FLOW - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Operating Activities: |  |  |  |
Net Loss | $ (3,480) | $ (2,467) | $ (8,870) | $ (5,754)
Reconciliation of net loss to cash used in operations: |  |  |  |
Non-cash lease expense |  |  |  | 2
Accretion of asset retirement obligations |  |  |  | 138
Costs incurred for restoration and reclamation activities |  |  |  | (167)
Depreciation and amortization |  |  | 2 | 30
Stock compensation expense |  |  | 295 | 28
Unrealized (gain) on equity securities |  |  | (1,411) |
Gain on disposal of fixed assets |  |  |  | (21)
Effect of changes in operating working capital items: |  |  |  |
(Increase) in prepaids and other assets |  |  | (74) | (148)
(Decrease)/Increase in payables and accrued liabilities |  |  | 925 | (173)
Net Cash Used In Operating Activities |  |  | (9,133) | (6,065)
Cash Flows From Investing Activities |  |  |  |
Proceeds from PPP loan escrow |  |  | 333 |
Building deposit |  |  | (100) |
Capital expenditures |  |  |  | (87)
Net Cash Provided By Investing Activities |  |  | 233 | (87)
Cash Flows From Financing Activities: |  |  |  |
Proceeds from note payable |  |  |  | 331
Net proceeds from common stock |  |  | 77,863 | 6,291
Payment of minimum withholding taxes on net share settlements of equity awards |  |  | (150) |
Net Cash Provided By Financing Activities |  |  | 77,713 | 6,622
Net increase in cash, cash equivalents and restricted cash |  |  | 68,813 | 470
Cash, Cash Equivalents and Restricted Cash, Beginning of Period |  |  | 50,325 | 5,667
Cash, Cash Equivalents and Restricted Cash, End of Period | $ 119,138 | $ 6,137 | $ 119,138 | $ 6,137

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