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Health hazard evaluation report: HETA-97-0199-2680, U.S. Department of the Interior, Yosemite National Park, California.
Cincinnati, OH: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, HETA 97-0199-2680, 1998 Mar; :1-19
The National Institute for Occupational Safety and Health (NIOSH) responded to a health hazard evaluation (HHE) request from the U.S. Department of the Interior. The request pertained to cases of musculoskeletal disorders of the upper and lower extremities and back among workers who build and maintain the back country trails of Yosemite National Park. NIOSH investigators reviewed available accident and injury records for the years 1995-97, interviewed workers, and evaluated the trail construction projects for ergonomic risk factors. The ergonomics evaluation included analyzing videotape and still photo records of workers performing their jobs, and applied forces required to maneuver rocks with a lever bar. NIOSH investigators concluded that the job tasks associated with building and maintaining hiking trails at Yosemite National Park include many ergonomic stress factors that can lead to musculoskeletal disorders of the back and upper and lower extremities.
Ergonomics; Musculoskeletal-system-disorders; Back-injuries; Cumulative-trauma-disorders; Region-9; Author Keywords: Land, Mineral, Wildlife, and Forest Conservation; ergonomics; upper and lower extremity musculoskeletal disorders; overexertion injuries; back injuries; rock breaking and drilling; sledge hammers; rock bars; wilderness medicine
Field Studies; Hazard Evaluation and Technical Assistance
NTIS Accession No.
National Institute for Occupational Safety and Health
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division