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Tag: Joseph Main

Main Addresses Mine Safety Progress

March 23, 2016 Rock Products News

In Nashville at the National Stone, Sand and Gravel Association’s annual convention, Assistant Secretary of Labor for Mine Safety and Health Joseph A. Main highlighted the measurable improvements that have taken place in mine safety and health in the past five years.

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Frac SandJoseph Main, MSHA, NSSGA

Main Addresses NSSGA Convention

March 23, 2015 Rock Products News

Joseph A. Main, Assistant Secretary of Labor for Mine Safety and Health, on March 16 addressed the National Sand, Stone and Gravel Association’s 2015 Convention in Baltimore.

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Latest NewsJoseph Main, MSHA, NSSGA, Secretary of Labor

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