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Condensed interim consolidated statements of cash flows - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2018 | Sep. 30, 2017
Operating activities |  |
Net loss for the period | $ (3,878) | $ (2,107)
Adjustments for the following items: |  |
Depletion and amortization | 7,044 | 5,795
Deferred income tax expense (recovery) | (10) | 116
Accretion and decommissioning costs | 12 | 134
Share-based payments | 1,675 | 1,568
Unrealized loss on non-current assets | 2 | 22
Provision on other long-term liabilities | 21 | 163
Deferred costs on credit facilities |  | 173
Net charges on post-employment benefit obligations | 13 | 76
Gain on forward contracts | (183) |
Gain on investment in equity instruments |  | (8)
Write-down of equipment | 65 |
Contingency on value added taxes | 125 |
Total adjustments | 4,886 | 5,932
Changes in non-cash working capital items: |  |
Trade and other receivables | 985 | (5,108)
Inventories | 1,116 | (1,229)
Prepaid expenses | (905) | 94
Forward contracts | (80) |
Trade and other payables | (152) | 79
Net cash generated from (used in) operating activities | 5,850 | (232)
Investing activities |  |
Expenditures on property, plant and equipment | (10,670) | (5,532)
Net development costs on San Rafael |  | (11,482)
Net development costs on EI Cajon |  | 460
Purchase of San Felipe property option | (2,000) | (7,108)
Bond on decommissioning costs | (370) |
Net cash used in investing activities | (13,040) | (23,662)
Financing activities |  |
Financing from (repayments to ) pre-payment facility | (2,770) | 15,000
Repayments to credit facilities |  | (8,005)
Sale of investment in equity instruments |  | 163
Proceeds from exercise of options and warrants | 3,578 | 1,610
Net cash generated from financing activities | 808 | 8,768
Effect of foreign exchange rate changes on cash | 168 | (206)
Decrease in cash and cash equivalents | (6,214) | (15,332)
Cash and cash equivalents, beginning of period | 9,325 | 24,055
Cash and cash equivalents, end of period | 3,111 | 8,723
Interest paid during the period | $ 757 | $ 925

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Period Type: | duration