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Extended workdays in an underground mine: a work performance analysis.
Duchon-JC; Keran-CM; Nelson-BC; Smith-TJ
Minneapolis, MN: U.S. Department of the Interior, Bureau of Mines, RI 9526, 1994 Jan; :1-18
The U.S. Bureau of Mines (USBM) conducted a study at a Canadian underground copper, lead, and zinc mining operation that was designed to study the safety and performance implications of extended workdays. Measures were taken before and after a change from the old 8-h continuous schedule to the new 12-h continuous schedule, including behavioral performance measures to analyze perceptual-motor changes, continuous heart-rate monitoring and aerobic capacity to measure physical fatigue, a variety of self-report questionnaires to measure perceived adaption and satisfaction with the new schedule, and pulmonary-respiratory measures to examine air contaminant exposure. Based upon the overall acceptance of the new schedule by the workers and lack of change in fatigue-sensitive behavioral and physiological performance measures, this study recommends that the mine retain the 12-h schedule. However, certain precautionary measures are suggested to ensure the safety of the workers.
Job-satisfaction; Human-factors-engineering; Human-behavior; Underground-mining; Personnel-management; Performance-evaluation; Extended-workdays; Mineral-industries
Report of Investigations
NTIS Accession No.
Minneapolis, MN: U.S. Department of the Interior, Bureau of Mines, RI 9526
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division