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Showing 1 to 3 of 3 for “"Mine roof control"”.
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Some factors in the use of roof bolts for mine roof control
… this equilibrium condition was the coal and mineral deposits. As they stand, the stresses acting on coal and mineral deposits are in equilibrium,—any underground mining operation upsets this equilibrium. Shocks due to the unbalancing of stresses often time cause catastrophic roof-falls which …