Method and equipment for loosening and/or winning minerals espec

Details Method and equipment for loosening and/or winning minerals espec Method and equipment for loosening and/or winning minerals espec

1990-08-06

1992-05-26

Bagnell, David J.

Mining or in situ disintegration of hard material

Processes

Breaking down by direct contact with fluid

166177, 175 71, E21C 3714

Patent

active

051161044

ABSTRACT:
A method for breaking coal and other mineral matter from a bed thereof provided with a bore hole consists of the steps of applying a flushing medium to a drill bit, loosening the mineral matter upon completing the drilling by conveying the compressed air to a plurality of blow slots and sealing a mouth of the bore before loosening the mineral matter.

REFERENCES:
patent: 2151328 (1939-03-01), Noble
patent: 2634113 (1953-04-01), Joy
patent: 2634114 (1953-04-01), Joy
patent: 4626031 (1986-12-01), Nemeth et al.

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