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Ergonomic analysis of the jackleg drill.
Bobick-TG; Marras-WS; Lavender-SA
Human engineering and human resources management in mining. Proceedings: Bureau of Mines Technology Transfer Seminar held at Pittsburgh, Pennsylvania on July 7-8, 1987; St. Louis, Missouri, July 15-16, 1987; and San Francisco, California, July 21-22, 1987. Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, IC 9145, 1987 Jul; :33-43
Research conducted for the Bureau of Mines by The Ohio State University has indicated that the jackleg drill, commonly used in underground metal-nonmetal mines, was involved with 46 pct of all lost-time hand tool-related accidents during the 1978-83 6-yr period. Videotapes of underground operations of jackleg drills have been collected and analyzed to determine the drills' biomechanical forces on the operators. A detailed task analysis identified that carrying the drill, positioning the drill steel, collaring the hole, and pulling the drill steel out of downward angled holes all contribute severe loadings to the drill operator's lumbar spine. A laboratory experiment was de· signed to investigate the stresses on the trunk muscles while performing these four tasks under controlled conditions. Preliminary electromyographic (EMG) data are presented.
Mining-industry; Mining-equipment; Underground-mining; Underground-miners; Musculoskeletal-system-disorders; Ergonomics; Injuries; Injury-prevention; Biomechanics; Equipment-operators
IH; Conference/Symposia Proceedings
Human engineering and human resources management in mining. Proceedings: Bureau of Mines Technology Transfer Seminar held at Pittsburgh, Pennsylvania on July 7-8, 1987; St. Louis, Missouri, July 15-16, 1987; and San Francisco, California, July 21-22, 1987
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division