NIOSH seeks to learn what individual miners learned from exposure levels

by emily j. haas and jay f. colinet

In 2014, the Mine Safety and Health Administration (MSHA) enacted a new regulation, “Lowering Miners’ Exposure to Respirable Coal Mine Dust, Including Continuous Personal Dust Monitors” (30 CFR Parts 70, 71, 72, 75, and 90) that contained several progressive phases. One phase required mine operators to use a continuous personal dust monitor (CPDM) for compliance sampling, with another phase reducing the permissible exposure limit of respirable coal mine dust to 1.5 mg/m3 over the working shift. It has been more than one year since mine operations have had to use the CPDM.
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