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mining objective questions in coal mines

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Respirable coal mine dust (RCMD) comprises the size fraction of airborne particles in underground mines that can be inhaled by miners and deposited in the distal airways and gas-exchange region of …

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Get Free Objective Questions Mining Engineering Mining objective answers 1. ANSWER SHEETQ1. Which cut is used for solid blasting in Indian coal Mines c) Wedge cutQ2. Permitted explosives are safe to use because d) Special chemical are used to extinguish

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Glossary of Mining Terms The remainder may represent coal in pillars or coal which is too thin or inferior to mine or lost in mining. Shallow coal mines working under townships, reservoirs, etc., may extract 50%, or less, of the entire seam, the remainder being left as pillars to protect the surface.

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