edited by William H. Sutherland, David R. Forshey, Michael Karmis ; sonsoring organizations: Department of Mining & Minerals Engineering, Virginia Polytechnic Institute & State University, Mine Safety and Health Administration, U.S. Department of Labor, Bureau of Mines, U.S. Department of the InteriorVirginia Polytechnic Institute and State University1989
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Author Heading...nd, William H. Forshey, David R. Karmis, Michael Virginia Poly...