konvencionalno rudarstvo

konvencionalno rudarstvo

The oldest form of room pillar mining, which consists of a series of operations that involve cutting the coal bed, so it breaks easily when blasted with explosives or high pressure air, and then loading the broken coal.

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Loại từ: noun
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Ngành nghề/Lĩnh vực: Energy
Category: Coal; Natural gas; Petrol
Company: EIA
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