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- National Mine Health and Safety Academy✖[remove]147
- United States. Mine Safety and Health Administration12
- Misagi, Leo4
- United States. Department of Labor4
- West Virginia University. Mining Extension Service4
- Rankin, J. E. (John E.)3
- Shumate, J. L.3
- Zabetakis, Michael George, 1924-3
- Carnes, Mac A.2
- Durham, Anglea1
- Elswick, James E.1
- Fama, Joseph P.1
- Hicks, James S.1
- Klishis, Michael J.1
- Lester, Cecil E.1
- Noah, Marilyn1
- Payne, Ann, 1940-1
- Pennsylvania State University. Dept. of Mineral Engineering1
- Schwamberger, Frank R.1
- TRAM (17th : 1990 : Morgantown, W. Va.)1