Proceedings, new technology for ground control in multiple-seam mining - Mark, Christopher; Tuchman, Robert J. (U.S. Dept. of Health and Human Services, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Pittsburgh Research Laboratory, 2007)
Title from title screen (viewed on March 24, 2008).
"May 2007."
Keywords: Coal mines and mining -- Congresses.; Ground control (Mining) -- Congresses.; Mine safety -- Congresses.; Mine subsidences -- Congresses.; Mining engineering -- Congresses.; Pillaring (Mining) -- Congresses.; Coal mines and mining.; elektronické knihy; electronic books