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When fires are sealed in gassy or dusty mines, a thick coating of rock dust should be applied to the ribs, roof and floor for several hundred feet outby the seals, and if possible, inside the seal, to reduce the chance of propagating a coal dust explosion.
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- False
Correct! The correct answer is A. True.
Statement No. 87: When fires are sealed in gassy or dusty mines, a thick coating of rock dust should be applied to the ribs, roof and floor for several hundred feet outby the seals, and if possible, inside the seal, to reduce the chance of propagating a coal dust explosion.
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