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SEGMENTED INFORMATION (Details) - Schedule of Sales by Metal - USD ($) $ in Thousands | 12 Months Ended
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Mar. 31, 2022 | Mar. 31, 2021
SEGMENTED INFORMATION (Details) - Schedule of Sales by Metal [Line Items] |  |
Silver (Ag) | $ 121,273 | $ 111,191
Gold (Au) | 5,083 | 6,722
Lead (Pb) | 57,090 | 50,464
Zinc (Zn) | 28,842 | 21,793
Other | 5,635 | 1,935
Sales | 217,923 | 192,105
Henan Luoning [Member] |  |
SEGMENTED INFORMATION (Details) - Schedule of Sales by Metal [Line Items] |  |
Silver (Ag) | 111,835 | 102,100
Gold (Au) | 5,083 | 5,169
Lead (Pb) | 48,504 | 42,836
Zinc (Zn) | 7,489 | 5,898
Other | 3,840 | 1,294
Sales | 176,751 | 157,297
Hunan [Member] |  |
SEGMENTED INFORMATION (Details) - Schedule of Sales by Metal [Line Items] |  |
Silver (Ag) |  |
Gold (Au) |  | 1,553
Lead (Pb) |  |
Zinc (Zn) |  |
Other |  |
Sales |  | 1,553
Guangdong [Member] |  |
SEGMENTED INFORMATION (Details) - Schedule of Sales by Metal [Line Items] |  |
Silver (Ag) | 9,438 | 9,091
Gold (Au) |  |
Lead (Pb) | 8,586 | 7,628
Zinc (Zn) | 21,353 | 15,895
Other | 1,795 | 641
Sales | $ 41,172 | $ 33,255

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