An Industrial Hygiene Survey for Lead Hazards at the Minuteman Missile Sites, near Great Falls, Montana.
Somerville-GW; Kronoveter-KJ; Hendrickson-AV
NIOSH 1968 Dec:37 pages
Worker exposures to lead (7439921) (Pb) were surveyed at the United States Air Force Minuteman Missile Sites (SIC-9711), Wing 1, Squadron 1, near Great Falls, Montana, from November 12 to 14, 1968. A total of 103 above ground, below ground, and former employees were examined, and blood and urine samples were collected and analyzed for Pb content. Air samples were collected from various work areas. No hazardous blood Pb concentrations were found in any samples from above ground or former employees. Below ground workers had Pb concentrations of 0.08 or more milligrams Pb per 100 grams blood. Clinical Pb poisoning symptoms reported by workers positively correlated with blood Pb concentrations. Iron workers, painters, and millwrights had the highest mean Pb concentrations. The below ground mean concentrations was 0.068 milligrams Pb per 100 grams blood, with the highest value for laborers at 0.130 milligrams Pb per 100 grams blood. Airborne Pb concentrations ranged from 0.02 to 5.29 milligrams per cubic meter (mg/m3), as compared to the threshold limit value of 0.20mg/m3. The highest Pb concentration was collected at a cutting operation in a lower equipment room launch tube. The authors conclude that hazardous conditions exist at the Minuteman Missile Site, especially during air arcing processes. They recommend improving sucker inlet placement, upgrading medical monitoring of personnel, removing a worker from exposure when blood Pb reaches 0.08 milligrams Pb per 100 grams blood. Protective equipment and improved hygienic practices also were recommended.
NIOSH-Author; NIOSH-Survey; Field-Study; Region-8; Health-surveys; Workplace-studies; Air-contamination; Control-methods; Occupational-health-programs; Metallic-poisons; Heavy-metals; Military-personnel; Hematology; IWS-56-19b;
NTIS Accession No.
Western Area Occupational Health Laboratory, Occupational Health Program, Environmental Control Administration, Consumer Protection and Environmental Health Service, U.S. Public Health Service, Salt Lake City, Utah, 37 pages, 4 references