National Technical Reports Library

The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

Details

PB81241671

Publication Date	1972
Personal Author	Weidner, R. B.; Fleming, R. M.
Page Count	12
Abstract	Asbestos (1332214) dust was measured at an open pit copper mine, and several underground copper mines of the Anaconda Company (SIC-3532) at Butte, Montana. Approximately 25 workers were employed in primary crushing operations where the samples were collected. Samples were collected at intervals of 5, and 90 minutes and were taken from around rock crushers, at the discharge of the crusher and next to workers at the sides of the conveyer. All of the samples were within the then existing standard of 5 fibers per cubic centimeter (fibers/cc); however, two samples exceeded the minimum standard that went into effect July 1976. The authors conclude that no asbestos fiber hazard exists.
Keywords	Environmental surveys Industrial medicine Asbestos Exposure Toxicity Inspection Hazardous materials Dust Standards Toxic substances Occupational safety and health CAS 1332-21-4 SIC-3532 Heavy metals
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. Div. of Field Studies and Clinical Investigations.
Document Type	Technical Report
Title Note	Industrywide study.
NTIS Issue Number	198126

Preliminary Survey to Determine Possible Asbestos Exposures at Rock Crushing Operations at the Anaconda Company, Butte, Montana.

Preliminary Survey to Determine Possible Asbestos Exposures at Rock Crushing Operations at the Anaconda Company, Butte, Montana.
PB81241671

Publication Date	1972
Personal Author	Weidner, R. B.; Fleming, R. M.
Page Count	12
Abstract	Asbestos (1332214) dust was measured at an open pit copper mine, and several underground copper mines of the Anaconda Company (SIC-3532) at Butte, Montana. Approximately 25 workers were employed in primary crushing operations where the samples were collected. Samples were collected at intervals of 5, and 90 minutes and were taken from around rock crushers, at the discharge of the crusher and next to workers at the sides of the conveyer. All of the samples were within the then existing standard of 5 fibers per cubic centimeter (fibers/cc); however, two samples exceeded the minimum standard that went into effect July 1976. The authors conclude that no asbestos fiber hazard exists.
Keywords	Environmental surveys Industrial medicine Asbestos Exposure Toxicity Inspection Hazardous materials Dust Standards Toxic substances Occupational safety and health CAS 1332-21-4 SIC-3532 Heavy metals
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. Div. of Field Studies and Clinical Investigations.
Document Type	Technical Report
Title Note	Industrywide study.
NTIS Issue Number	198126