Method of mining

Details Method of mining Method of mining

1993-06-28

1994-08-16

Bagnell, David J.

Mining or in situ disintegration of hard material

Processes

299 39, 299 86, E21C 2730

Patent

active

053381025

ABSTRACT:
A method of mining includes striking the surface of friable to brittle, essentially homogeneous mineral materials with a plurality of concave-faced cutting tools rotating about a longitudinal axis disposed substantially parallel with the surface of the mineral material. Segments of the mineral material are cleaved by the cutting tools as the tools strike the surface and then pass along a predetermined path completely through the mineral material.

REFERENCES:
patent: 3746101 (1973-07-01), Takata
patent: 4186968 (1980-02-01), Barton
patent: 4222446 (1980-09-01), Vasek
patent: 4738291 (1988-04-01), Isley
patent: 4783123 (1988-11-01), Ottestad
patent: 4838729 (1989-06-01), Chennels
patent: 5078219 (1992-01-01), Morrell et al.
Proceedings of International Symposium of Mine Mechanization and Automation, Golden Co., Jun. 10-13, 1991, "The Development and Testing of The Concave Bit", by D. A. Larson et al.

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