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DYNAMICHOISTTESTS

By Derrick Ford,2015-01-29 07:30
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DYNAMIC HOIST TESTS Thomas D. Barkand William J. Helfrich Mine Safety and Health Administration Mine Electrical Systems Division Cochrans Mill Road, P.O. Box 18233 Pittsburgh, Pennsylvania 15213 ABSTRACT An increasing number of hoists are being commissioned at the request of coal mine operators and MSHA enforcement personnel. Th..
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