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Industrial Hygiene Study of the Gouverneur Talc Company, Number One Mine and Mill, Balmat, New York, November 3-7, 1975. Volume 1.

PB89100762

Publication Date	1977
Personal Author	Dement, J. M.; Zumwalde, R. D.
Page Count	160
Abstract	Bulk samples of talc were collected and personal air sampling was conducted in the mine and the mill. X-ray diffraction and optical or electron microscope analysis was conducted by NIOSH and two independent laboratories. All laboratories confirmed the presence of asbestiform tremolite and anthophyllite in the bulk talc samples at concentrations of 67 to 88 and 4 to 12 percent, respectively. Time weighted average (TWA) values for fiber and dust personal exposures for almost 30 job categories ranged from 1.7 to 9.8 fibers greater than 5 microns per cubic centimeter, and 0.25 to 2.96 milligrams per cubic meter, respectively. Free silica exposures were very low. Analysis of the impinger samples revealed excessive exposure to asbestos at almost every mine and mill operation. The authors conclude that excessive exposures to airborne fibers exist in both mine and mill. Recommendations include improved ventilation, upgraded equipment maintenance, and provision of respiratory protection to employees.
Keywords	Environmental surveys Industrial hygiene Talc Asbestos Mining industry Exposure Dust Fibers Sampling Silicate minerals Silicon dioxide Concentration(Composition) Toxic substances Occupational safety and health Tremolite Anthophyllite
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	57U - Public Health & Industrial Medicine 41I - Job Environment 68G - Environmental Health & Safety 68A - Air Pollution & Control
Corporate Authors	National Inst. for Occupational Safety and Health, Cincinnati, OH. Div. of Surveillance, Hazard Evaluations and Field Studies.
Supplemental Notes	See also PB81-224719. Portions of this document are not fully legible.
Document Type	Technical Report
Title Note	Final rept.,
NTIS Issue Number	198901

Industrial Hygiene Study of the Gouverneur Talc Company, Number One Mine and Mill, Balmat, New York, November 3-7, 1975. Volume 1.

Industrial Hygiene Study of the Gouverneur Talc Company, Number One Mine and Mill, Balmat, New York, November 3-7, 1975. Volume 1.
PB89100762

Publication Date	1977
Personal Author	Dement, J. M.; Zumwalde, R. D.
Page Count	160
Abstract	Bulk samples of talc were collected and personal air sampling was conducted in the mine and the mill. X-ray diffraction and optical or electron microscope analysis was conducted by NIOSH and two independent laboratories. All laboratories confirmed the presence of asbestiform tremolite and anthophyllite in the bulk talc samples at concentrations of 67 to 88 and 4 to 12 percent, respectively. Time weighted average (TWA) values for fiber and dust personal exposures for almost 30 job categories ranged from 1.7 to 9.8 fibers greater than 5 microns per cubic centimeter, and 0.25 to 2.96 milligrams per cubic meter, respectively. Free silica exposures were very low. Analysis of the impinger samples revealed excessive exposure to asbestos at almost every mine and mill operation. The authors conclude that excessive exposures to airborne fibers exist in both mine and mill. Recommendations include improved ventilation, upgraded equipment maintenance, and provision of respiratory protection to employees.
Keywords	Environmental surveys Industrial hygiene Talc Asbestos Mining industry Exposure Dust Fibers Sampling Silicate minerals Silicon dioxide Concentration(Composition) Toxic substances Occupational safety and health Tremolite Anthophyllite
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	57U - Public Health & Industrial Medicine 41I - Job Environment 68G - Environmental Health & Safety 68A - Air Pollution & Control
Corporate Authors	National Inst. for Occupational Safety and Health, Cincinnati, OH. Div. of Surveillance, Hazard Evaluations and Field Studies.
Supplemental Notes	See also PB81-224719. Portions of this document are not fully legible.
Document Type	Technical Report
Title Note	Final rept.,
NTIS Issue Number	198901