1. Barry, T. and Associates, 1971. Industrial engineering study of hazards associated with u/g coalmine production. NTIS No. PB-207-226. US Bureau of Mines, Los Angeles
2. Bennet, J.D., 1982. Relationship Between Workplace and Worker Characteristics and Severity of Injuries in U.S. Underground Bituminous Coal Mines, 1975–1981. Ph.D. Thesis, Pennsylvania State University
3. Multinomial logit analysis of injury severity in U.S. underground bituminous coal mines, 1975–1982;Bennet;Accident Analysis and Prevention,1985
4. Relative risk analysis of injuries in coal mining by age and experience at present company;Butani;Journal of Occupational Accidents,1988
5. A casual model of the relationship among accidents, bio-data, personality and cognitive factors;Hansen;Journal of Applied Psychology,1989