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Health hazard evaluation report: MHETA-82-118-9005, Amax Coal Company, Gillette, Wyoming.
Gunter BJ; Reno SJ
Morgantown, WV: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, MHETA 82-118-9005, 1982 Nov; :1-8
Worker exposures to an organic hydrocarbon cleaner, Electrosol (8027541) were examined at the Amax Coal Company's Belle Ayr Mine (SIC-1211), Gillette, Wyoming. The study was requested by an employee and was conducted on June 15 and 16, 1982. Two breathing zone and three general area air samples were collected for methyl- chloroform (71556) which was being used to clean earth moving equipment. Breathing zone samples were 77 and 32 parts per million (ppm), compared to a NIOSH evaluation criteria of 350ppm. Area samples were 0.002ppm, 1.5ppm, and 4480ppm. This high value was probably caused by a direct splash of the methyl-chloroform during spraying. Individuals were observed smoking while working with the solvent, and direct skin contact with methyl-chloroform was also observed. No health complaints were reported. The authors conclude that environmental sampling did not indicate an overexposure to airborne concentrations of methyl-chloroform. Due to the possibility of workers receiving high exposures during cleaning, it is recommended that protective clothing and respirators with organic vapor cartridges be employed.
NIOSH-Author; NIOSH-Health-Hazard-Evaluation; MHETA-82-118-9005; Region-8; Hazard-Unconfirmed; Underground-mining; Mining-industry; Miners; Air-sampling; Solvents; Work-practices
Field Studies; Hazard Evaluation and Technical Assistance
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National Institute for Occupational Safety and Health
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division