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 Date: 2014-07-17 14:06:59Mine Safety and Health Administration Mining Coal mining Sago Mine disaster |
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Date: 2014-07-17 14:06:59Mine Safety and Health Administration Mining Coal mining Sago Mine disaster |
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Remarks of Joseph A. Main, Assistant Secretary of Labor for Mine Safety and Health “Further Along the Road to Zero” Bluefield Coal Symposium Bluefield, W Va