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Question
Coal is mined deep from the Earth's interior. But there's a pattern the miners follow to cut these black gold. Figure out the patterns.
Coal is mined deep from the Earth's interior. But there's a pattern the miners follow to cut these black gold. Figure out the patterns.
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Solution
The correct option is C Long wall and pillar
When a coal seam is too deep for efficiently mine the coal from the surface, the underground mining techniques are used.
The underground method of coal mining currently utilises two main techniques: room and pillar mining, and longwall mining.
Long wall and pillar
When a coal seam is too deep for efficiently mine the coal from the surface, the underground mining techniques are used.
The underground method of coal mining currently utilises two main techniques: room and pillar mining, and longwall mining.
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