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Cincinnati Municipal Garage, Automobile Brake Servicing Operation, January 28, 1972.

PB83188045

Publication Date	1972
Personal Author	Dement, J. M.
Page Count	8
Abstract	Air samples taken during an automobile brake servicing operation on January 28, 1972 were analyzed for the presence of airborne asbestos fiber, lead dust, and copper dust. The samples were analyzed for asbestos fiber by means of X-ray diffraction and optical microscopy. Although most brake linings contain 20%-70% asbestos by weight, very little asbestos dust was found in the samples. The present theory used to explain these findings is that most of the fiber is converted to an amorphous mineral by intense heat and fine grinding during braking.
Keywords	Environmental surveys Industrial medicine Brakes(Motion arresters) Automobiles Exposure Toxicity Inspection Hazardous materials Asbestos Brake linings Indoor air pollution Toxic substances Occupational safety and health
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
Corporate Authors	National Inst. for Occupational Safety and Health, Cincinnati, OH.
Document Type	Technical Report
Title Note	Survey rept.
NTIS Issue Number	198315

Cincinnati Municipal Garage, Automobile Brake Servicing Operation, January 28, 1972.

Cincinnati Municipal Garage, Automobile Brake Servicing Operation, January 28, 1972.
PB83188045

Publication Date	1972
Personal Author	Dement, J. M.
Page Count	8
Abstract	Air samples taken during an automobile brake servicing operation on January 28, 1972 were analyzed for the presence of airborne asbestos fiber, lead dust, and copper dust. The samples were analyzed for asbestos fiber by means of X-ray diffraction and optical microscopy. Although most brake linings contain 20%-70% asbestos by weight, very little asbestos dust was found in the samples. The present theory used to explain these findings is that most of the fiber is converted to an amorphous mineral by intense heat and fine grinding during braking.
Keywords	Environmental surveys Industrial medicine Brakes(Motion arresters) Automobiles Exposure Toxicity Inspection Hazardous materials Asbestos Brake linings Indoor air pollution Toxic substances Occupational safety and health
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
Corporate Authors	National Inst. for Occupational Safety and Health, Cincinnati, OH.
Document Type	Technical Report
Title Note	Survey rept.
NTIS Issue Number	198315