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• A method for estimating strength of rock containing planes of weakness
• The use of rock bolts or wire rope to increase the strength of fractured model pillars
• A Thousand-ton capacity stiff testing machine
• Pillar failure analysis and in situ stress determinations at the Fletcher mine near Bunker, Mo.
• Mechanical properties of cores obtained from the unleached saline zone, Piceance Creek Basin, Rio Blanco County, Colo.