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Fracturing Hard Rock With Nuclear Explosives and Extraction of Ore by a Modified Block-caving Method.
NTIS: PB 192 308 :18 pages
Nuclear explosive fracturing has been suggested as a method to make hard rock amenable to extraction by a modified block-caving method. To evaluate this possibility, conventional and nuclear blasting practices are discussed; underground mining methods for large deposits and their costs are described, and the cost of fracturing ore with a nuclear explosive and subsequent mining by a modified caving system is estimated and compared with both open-stope and block-caving mining costs. While the direct cost of fracturing the ore in hard rock with a nuclear explosive is less than with conventional explosives, additional costs imposed by the use of nuclear explosives may make their use unattractive for deep mining.
IH; Report of Investigations
NTIS Accession No.
NTIS: PB 192 308
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division