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LORE: The Punjab government has introduced semimechanised mining technology to get maximum production of coal for operating its coalbased power plants.
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Perhaps the most significant development in coal mine ground control during the last century was the introduction of roof bolting during the late 1940''s and 1950''s.
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One efficient way of mining coal underground is by ''longwall'' mining. This is when mechanised shearers advance along the face of a ... Expert Table Activity
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One efficient way of mining coal underground is by ''longwall'' mining. This is when mechanised shearers advance along the face of a block or seam of coal which can ...
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