Б-12. Промбезопасность. Тест

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B.12 Industrial safety requirements related to blasting

B.12.1 Explosive work in underground workings and on the surface of mines (objects of mining and non-metallic industry), coal and shale mines, dangerous (not dangerous) for gas or dust, and special blasting
B.12.2 Explosive work in open pit mining and special blasting

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