A Rock Products Special Report: Silicosis, Asthma, COPD and Michigan’s Sand, Gravel and Stone Miners

By Joe McGuire This Rock Products special report, authored by safety consultant Joseph McGuire, was written to refute the findings in a recently released study, “Evaluation of Silicosis, Asthma and COPD Among Sand and Gravel, and Stone Surface Mine Workers.” – Ed.

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