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.

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Survey of Hearing Loss in the Coal Mining Industry.

PB271811

Publication Date	1976
Page Count	150
Abstract	The report contains results of a study of hearing loss in the underground coal mining industry. Hearing tests are given to 1,500 miners by NIOSH at eleven randomly selected coal mines in Kentucky, Pennsylvania, and West Virginia. Noise surveys are performed at the same mines by personnel of the Mining Enforcement and Safety Administration (previously of the U.S. Bureau of Mines). Hearing data are presented in groups based on noise exposure and job category. The data are also analyzed with respect to selected factors including recreational use of firearms and suspected otoscopic abnormalities. Statistical accuracy versus group sample size is discussed in an Appendix. Underground coal miners are found to have measureably worse hearing than the national average, but the degree of hearing loss is not as severe as among some other occupational groups. In light of the Bureau of Mines noise survey data, the hearing test results do not lend support to the notion that coal mine noise is inherently less hazardous than predicted from noise surveys because of its intermittent nature. Coal miners are found to have a higher than normal incidence of otoscopically observable ear abnormalities. Individual audiometric data are tabulated in an Appendix.
Keywords	Auditory defects Coal mining Tests Exposure Noise(Sound) Statistical analysis Surveys Kentucky Pennsylvania West Virginia Questionnaires Procedures Equipment Analyzing Correlations Tables(Data) Hearing loss Noise pollution Occupational safety and health Appendices
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	94D - Job Environment 57U - Public Health & Industrial Medicine 68G - Environmental Health & Safety 68B - Noise Pollution & Control 48A - Mineral Industries
Corporate Authors	National Inst. for Occupational Safety and Health, Cincinnati, Ohio. Div. of Biomedical and Behavioral Science.
Document Type	Technical Report
Title Note	Research rept.
NTIS Issue Number	197724

Survey of Hearing Loss in the Coal Mining Industry.

Survey of Hearing Loss in the Coal Mining Industry.
PB271811

Publication Date	1976
Page Count	150
Abstract	The report contains results of a study of hearing loss in the underground coal mining industry. Hearing tests are given to 1,500 miners by NIOSH at eleven randomly selected coal mines in Kentucky, Pennsylvania, and West Virginia. Noise surveys are performed at the same mines by personnel of the Mining Enforcement and Safety Administration (previously of the U.S. Bureau of Mines). Hearing data are presented in groups based on noise exposure and job category. The data are also analyzed with respect to selected factors including recreational use of firearms and suspected otoscopic abnormalities. Statistical accuracy versus group sample size is discussed in an Appendix. Underground coal miners are found to have measureably worse hearing than the national average, but the degree of hearing loss is not as severe as among some other occupational groups. In light of the Bureau of Mines noise survey data, the hearing test results do not lend support to the notion that coal mine noise is inherently less hazardous than predicted from noise surveys because of its intermittent nature. Coal miners are found to have a higher than normal incidence of otoscopically observable ear abnormalities. Individual audiometric data are tabulated in an Appendix.
Keywords	Auditory defects Coal mining Tests Exposure Noise(Sound) Statistical analysis Surveys Kentucky Pennsylvania West Virginia Questionnaires Procedures Equipment Analyzing Correlations Tables(Data) Hearing loss Noise pollution Occupational safety and health Appendices
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	94D - Job Environment 57U - Public Health & Industrial Medicine 68G - Environmental Health & Safety 68B - Noise Pollution & Control 48A - Mineral Industries
Corporate Authors	National Inst. for Occupational Safety and Health, Cincinnati, Ohio. Div. of Biomedical and Behavioral Science.
Document Type	Technical Report
Title Note	Research rept.
NTIS Issue Number	197724