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Fracturing Hard Rock With Nuclear Explosives and Extraction of Ore by a Modified Block-caving Method.

Authors
Hardwick-WR
Source
NTIS: PB 192 308 :18 pages
Link
NIOSHTIC No.
10001668
Abstract
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.
Publication Date
19700101
Document Type
IH; Report of Investigations
Fiscal Year
1970
NTIS Accession No.
PB-192308
NTIS Price
A03
Identifying No.
RI 7391
Source Name
NTIS: PB 192 308
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