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Designing Coal Pillars from Drill Core Data.
Karmis-M; Haycocks-C; Breer-C; Topuy-E
Coal Conf and Expo V Louisville Kentucky 1979 Oct; Louisville:20-26
Coal Conf. and Expo V, Louisville, Kentucky, October 23, 1979, PP. 20-26
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division