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HHE Determination, Report No. HHE-76-88-380, Minnesota Mining and Manufacturing Co., Copley, Ohio.

Authors
Evans-W
Source
NIOSH 1977 Apr:9 pages
Link
NIOSHTIC No.
00069934
Abstract
A Health Hazard Evaluation investigation was conducted by NIOSH at the chromic-oxide (1308389) producing area (SIC-2819) of the Minnesota Mining and Manufacturing Company, Copley, Ohio, on November 29-30, 1976. The investigation was prompted by a request from an authorized representative of employees to evaluate the potential hazard associated with employee exposure to chromate pigments. Seven affected employees were interviewed and an environmental survey was conducted by obtaining time weighted average and ceiling measurements of employee exposure to hexavalent chromium (7440473) and trivalent chromium. Based on environmental samplings, evaluation of ventilation systems, observations of employee work practices, and available toxicity information it is concluded that employee exposures to noncarcinogenic hexavalent chromium contained in sodium-bichromate (10588019), as measured during the survey, did not constitute a health hazard. All atmospheric levels of hexavalent chromium were below evaluation criteria. Although no standards exist from trivalent chromium, recommendation are made for preventing the release of trivalent chromium dust in the air. Certain employees who had experienced nosebleeds and other hexavalent chromium related problems in the past had not experienced such problems for at least 1.5 to 2 years of work, probably as a result of the installation of local exhaust ventilation to prevent exposure.
Keywords
NIOSH-Author; NIOSH-Health-Hazard-Evaluation; HHE-76-88-380; Hazard-Unconfirmed; Region-5; Heavy-metals; Air-quality-measurement; Industrial-plants; Toxic-chemicals; Chromium-poisoning; Metal-poisoning; Dust-control; Chemical-processing-industry; Exposure-limits; Industrial-hygiene; Air-sampling; Toxicology; Air-contamination;
CAS No.
1308-38-9; 7440-47-3; 10588-01-9;
Publication Date
19770401
Document Type
Hazard Evaluation and Technical Assistance; Field Studies
Fiscal Year
1977
NTIS Accession No.
PB-273923
NTIS Price
A02
Identifying No.
HHE-76-88-380
NIOSH Division
DSHEFS;
SIC Code
2819;
Source Name
Hazard Evaluation Services Branch, NIOSH, Cincinnati, Ohio, Report No. HHE-76-88-380, 9 pages, 3 references
State
MN; OH;
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