Explosive mine breaking apparatus with arc-suppressing heat-diss

Details Explosive mine breaking apparatus with arc-suppressing heat-diss Explosive mine breaking apparatus with arc-suppressing heat-diss

1983-06-02

1985-02-12

Nelson, Peter A.

Ammunition and explosives

Blasting

Patterned blasting

102313, 102316, 102320, 102331, 166 63, 175 455, 299 12, 299 13, F42D 300

Patent

active

044983913

ABSTRACT:
Steep dip strong-coal deposits can be broken in an explosive mine environment utilizing a succession of explosive units each of which comprises a core tube surrounded by a body of explosive material which, in turn, is surrounded by an arc-suppressing heat-dissipating fluid. Igniters in the explosive charges have conductors which are lead back out of the bore hole through the tubes of the explosive units which are anchored at spaced locations along the bore hole.

REFERENCES:
patent: 3648614 (1972-03-01), Berthmann et al.
patent: 4079675 (1978-03-01), Buemel, Jr.
patent: 4284306 (1981-08-01), Edmonds et al.
patent: 4411474 (1983-10-01), Higgins
patent: 4417992 (1983-11-01), Bhattacharyya et al.

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