1 results for Evaluation of Explosion-resistant Seals, Stoppings, and Overcast for Ventilation Control in Underground Coal Mining National Institute for Occupational Safe Kenneth L. Cashdollar Michael J. Sapko
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1 results for Evaluation of Explosion-resistant Seals, Stoppings, and Overcast for Ventilation Control in Underground Coal Mining National Institute for Occupational Safe Kenneth L. Cashdollar Michael J. Sapko