Mining or in situ disintegration of hard material – Processes – Breaking down by direct contact with fluid
Patent
1984-06-15
1985-08-20
Novosad, Stephen J.
Mining or in situ disintegration of hard material
Processes
Breaking down by direct contact with fluid
175 67, 166 52, E21C 3712
Patent
active
045360359
ABSTRACT:
A method of hydraulically mining an underground pitched mineral vein comprising drilling a vertical borehole through the earth's lithosphere into the vein and drilling a slant borehole along the footwall of the vein to intersect the vertical borehole. Material is removed from the mineral vein by directing a high pressure water jet thereagainst. The resulting slurry of mineral fragments and water flows along the slant borehole into the lower end of the vertical borehole from where it is pumped upwardly through the vertical borehole to the surface.
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Huffman Lester H.
Knoke Gerald S.
Goodwin Michael
Hightower Judson R.
Novosad Stephen J.
Nypaver Edward W.
The United States of America as represented by the United States
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