NIOSHTIC-2 Publications Search
Advances in hardrock mining: fundamental findings are used to develop alternatives to drill-blast-muck mining methods.
Eng Min J 1990 Oct; 191(10):36-38
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.
OP; Journal Article
Issue of Publication
Engineering and Mining Journal
Page last reviewed: December 3, 2021
Content source: National Institute for Occupational Safety and Health Education and Information Division