Unger, Richard L. books & textbook
Underground coal mine track inspection and cleaning vehicle
University of Michigan Library /1989-01-01 Paperback / 44 Pages
Bureau of Mines research into reducing materials handling injuries
University of Michigan Library /1986-01-01 Paperback / 32 Pages
Ergonomics and Risk Factor Awareness Training for Miners
Torma-Krajewski, Dr. Janet Steiner, Lisa J. Unger, Richard L. Wiehagen, William J. Centers for Occupational Safety and Health, Department of Health and Human Services National Institute for Safety and Health
CreateSpace Independent Publishing Platform /2008-07-31 Paperback / 188 Pages
isbn-10: 1492998818 / isbn-13: 9781492998815
