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16. Business Segments (Details 3) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015
Revenues | $ 11,890,135 | $ 13,109,003
Depreciation and amortization | 999,737 | 932,786
Income (loss) from operations | (816,522) | (808,997)
Income tax expense | (298,138) |
Other income (expense): | (194,540) | (29,534)
Income (loss) before income taxes | (1,011,062) | (838,531)
NET INCOME (LOSS) | (1,309,200) | (838,531)
Antimony [Member] |  |
Revenues | 8,740,602 | 9,856,398
Depreciation and amortization | 81,328 | 61,819
Income (loss) from operations | 4,048,193 | 4,990,865
Income tax expense | (13,090) |
Other income (expense): | (34,262) | (24,280)
NET INCOME (LOSS) | 2,859,972 | 4,475,160
Mexico Antimony [Member] |  |
Revenues | 3,568 | 7,535
Depreciation and amortization | 704,541 | 649,526
Income (loss) from operations | (5,109,734) | (6,311,265)
Income tax expense | (285,048) |
Other income (expense): | (149,165) |
NET INCOME (LOSS) | (5,133,439) | (6,311,265)
Precious Metals [Member] |  |
Revenues | 672,871 | 491,426
Depreciation and amortization | 0 |
Income (loss) from operations | 0 |
Income tax expense | 0 |
Other income (expense): | 0 |
NET INCOME (LOSS) | 672,871 | 491,426
Zeolite (Member) |  |
Revenues | 2,473,094 | 2,753,644
Depreciation and amortization | 213,868 | 221,441
Income (loss) from operations | 245,019 | 511,403
Income tax expense | 0 |
Other income (expense): | (11,113) | (5,255)
NET INCOME (LOSS) | $ 233,907 | $ 506,148

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