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Industrial Hygiene Survey of the Phosphate Industry in Polk County, Florida, May 28, 1957.

PB89122907

Publication Date	1958
Page Count	33
Abstract	Worker exposure to dust, free silica, and fluoride concentrations were determined at facilities of the phosphate industry upon a request from the President of the International Chemical Workers' Union to the Surgeon General of the Public Health Service. Partial medical records were maintained and all employees received preemployment physicals. The dust in the dry mill area was well under 5 percent in free silica content; fluoride concentrations of airborne dust at storage and shipping operations in this area at times considerably exceeded the American Conference of Government Industrial Hygienists threshold limit value (TLV) of 2.5 milligrams per cubic meter. Over half of the atmospheric fluoride concentrations at a chemical facility exceeded the TLV. The authors recommended that environmental and medical studies be conducted in the phosphate industry to determine the extent and magnitude of potential health hazards. The studies should include air sampling, routine urine fluoride analyses on workers in dry mill and chemical facility areas, and physical examinations of workers.
Keywords	Environmental surveys Industrial medicine Dust Fluorides Silica minerals Exposure Toxicity Inspection Hazardous materials Toxic substances Occupational safety and health Phosphate industry Region 4 Air sampling
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	57U - Public Health & Industrial Medicine 57Y - Toxicology 94D - Job Environment 68G - Environmental Health & Safety 68A - Air Pollution & Control
Corporate Authors	National Inst. for Occupational Safety and Health, Cincinnati, OH. Industrywide Studies Branch.; Florida State Board of Health, Miami.
Supplemental Notes	Prepared in cooperation with Florida State Board of Health, Miami.
Document Type	Technical Report
NTIS Issue Number	198903

Industrial Hygiene Survey of the Phosphate Industry in Polk County, Florida, May 28, 1957.

Industrial Hygiene Survey of the Phosphate Industry in Polk County, Florida, May 28, 1957.
PB89122907

Publication Date	1958
Page Count	33
Abstract	Worker exposure to dust, free silica, and fluoride concentrations were determined at facilities of the phosphate industry upon a request from the President of the International Chemical Workers' Union to the Surgeon General of the Public Health Service. Partial medical records were maintained and all employees received preemployment physicals. The dust in the dry mill area was well under 5 percent in free silica content; fluoride concentrations of airborne dust at storage and shipping operations in this area at times considerably exceeded the American Conference of Government Industrial Hygienists threshold limit value (TLV) of 2.5 milligrams per cubic meter. Over half of the atmospheric fluoride concentrations at a chemical facility exceeded the TLV. The authors recommended that environmental and medical studies be conducted in the phosphate industry to determine the extent and magnitude of potential health hazards. The studies should include air sampling, routine urine fluoride analyses on workers in dry mill and chemical facility areas, and physical examinations of workers.
Keywords	Environmental surveys Industrial medicine Dust Fluorides Silica minerals Exposure Toxicity Inspection Hazardous materials Toxic substances Occupational safety and health Phosphate industry Region 4 Air sampling
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	57U - Public Health & Industrial Medicine 57Y - Toxicology 94D - Job Environment 68G - Environmental Health & Safety 68A - Air Pollution & Control
Corporate Authors	National Inst. for Occupational Safety and Health, Cincinnati, OH. Industrywide Studies Branch.; Florida State Board of Health, Miami.
Supplemental Notes	Prepared in cooperation with Florida State Board of Health, Miami.
Document Type	Technical Report
NTIS Issue Number	198903