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Advances in hardrock mining: fundamental findings are used to develop alternatives to drill-blast-muck mining methods.

Authors
Schmidt-RL
Source
Eng Min J 1990 Oct; 191(10):36-38
NIOSHTIC No.
10008423
Abstract
The U.S. Bureau of Mines has a long-term program on nonexplosive fragmentation of hard rock. The thrust of this research has been water-jet and mechanical fragmentation. The ultimate objective is to develop equipment and procedures for continuous hardrock extraction as an alternative to the cyclic drill-blast-muck system used in most underground hardrock mines. In the quest for a more continuous mining system, the Bureau has introduced two mechanical systems, the radial-axial splitter and the ripper-miner. Both have been shown to be capable of continuous hardrock fragmentation.
CODEN
ENMJAK
Publication Date
19901001
Document Type
OP; Journal Article
Fiscal Year
1991
NTIS Accession No.
NTIS Price
Identifying No.
OP 276-90
Issue of Publication
10
ISSN
0095-8948
NIOSH Division
TCRC
Source Name
Engineering and Mining Journal
State
MN
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