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A new hardrock cutting technology.

Authors
Thimons-ED; Kogelmann-WJ; Virgona-JE; Weakly-LA
Source
World Min Equip 1991 Jun; :1
NIOSHTIC No.
10010891
Abstract
This U.S. Bureau of Mines paper summarizes tests of the effectivenss of polycrystalline diamond composite (pcd) bits in cutting oil shale and the possible synergy of these bits and water-jet-assisted cutting. The tests have shown convincingly that the potential for this technology is considerable. Experience with rotary pcd drill bits in the unical oil shale mine in Colorado has shown that these cost some 10 times more than conventional carbide bits, but have a life expectancy of about 80 times longer. In this way, the combination of water-jet-assist and pcd bits may represent the first major advance in hardrock cutting technology since the introduction of tungsten carbide tools 40 years ago.
Publication Date
19910601
Document Type
OP; Journal Article
Fiscal Year
1991
NTIS Accession No.
NTIS Price
Identifying No.
OP 187-91
ISSN
0746-729X
NIOSH Division
PRC
Source Name
World Mining Equipment
State
CO; PA
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