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12/20/2022 - News and announcementsLooking for updated information? Use the latest data and statistics.
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1/1/2008 - Conference papersThis paper presents a modification which corrects the mathematical error in the Holmberg-Persson approach to perimeter blast design.
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1/1/1993 - Reports of InvestigationsResearchers at the U.S. Bureau of Mines investigated the use of close-range photogrammetry and subsequent stereo digitizing to obtain data from rock fracture roughness profiles.
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Content source: National Institute for Occupational Safety and Health, Mining Program