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Federal
MSHA Coal Dust Samples
Department of Labor —
All operator and inspector dust samples taken for gravimetric samples. It includes information such as cassette numbers, date the sample was taken, initial and final... -
Federal
MSHA Personal Health Samples
Department of Labor —
Information about samples taken at Metal/Non-Metal mines as it relates to miners. Information included is the sample number and date, contaminant codes, concentration...