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HHE Determination Report, No. MHETA-81-108-9004, Climax Molybdenum Company, Climax, Colorado.

Authors
Cornwell-RJ
Source
NIOSH 1982 Nov:19 pages
Link
NIOSHTIC No.
00130226
Abstract
Employee exposure to diesel emissions at the Climax Molybdenum Company Mine (SIC-1061) in Climax, Colorado, was investigated. The study was requested by the Oil, Chemical and Atomic Workers Union and was performed on September 23 and 24, 1981. The mine employed about 1200 people in underground operations. Environmental air samples were taken for nitrogen-dioxide (10102440), sulfur-dioxide (7446095), polynuclear aromatic compounds, formaldehyde (50000), respirable particulates and free silica (14808607), carbon-monoxide (630080), and carbon-dioxide (124389). Seventy four percent of the environmental samples collected for diesel particulates contained an average of 0.3 percent polynuclear aromatic compounds by weight as the cyclohexane soluble fraction. Thirty six percent of the free silica samples equaled or exceeded the NIOSH recommended limit of million of nitrogen-dioxide was present, although long term exposures may have exceeded the NIOSH recommended limit of 1 part per million. The remaining substances were either not detected or were well below the recommended criteria. The author concludes that the potential for a health hazard exists from exposure to free silica and polynuclear compounds.
Keywords
NIOSH-Author; NIOSH-Health-Hazard-Evaluation; Region-8; MHETA-81-108-9004; Hazards-Confirmed; Underground-mining; Mining-industry; Miners; Organic-compounds; Polycyclic-aromatic-hydrocarbons; Air-sampling; Metal-oxides; Molybdenum-compounds;
CAS No.
10102-44-0; 7446-09-5; 50-00-0; 14808-60-7; 630-08-0; 124-38-9;
Publication Date
19821101
Document Type
Field Studies; Hazard Evaluation and Technical Assistance
Fiscal Year
1983
NTIS Accession No.
PB84-148501
NTIS Price
A03
Identifying No.
MHETA-81-108-9004
NIOSH Division
DSHEFS; DRDS;
SIC Code
1061;
Source Name
Mining Health Hazard Evaluation and Technical Assistance Program, NIOSH, Morgantown, West Virginia, 19 pages, 19 references
State
CO; VA; WV;
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