Method of an apparatus for gaining access to an underground cham

Details Method of an apparatus for gaining access to an underground cham Method of an apparatus for gaining access to an underground cham

1978-06-08

1981-03-10

Pate, III, William F.

Mining or in situ disintegration of hard material

Processes

Mine safety

175 96, 175219, 405133, 405144, E21F 1100

Patent

active

042549949

ABSTRACT:
Method and apparatus for gaining access to an underground chamber is disclosed to utilize a pressurized pipe casing which defines a conduit for introducing compressed air to a drill, which drill is utilized to bore a rescue hole to an area of entrapped miners. Thereafter, access is gained to the area of entrapment and the drill pipe is utilized as casing defining a rescue shaft for providing ingress of rescue personnel and egress of entrapped miners.

REFERENCES:
patent: 1819918 (1931-08-01), Olson
patent: 1866438 (1932-07-01), Williamson
patent: 2534480 (1950-12-01), Shannon
patent: 3237990 (1966-03-01), Robbins et al.
patent: 3277766 (1966-10-01), Burkdoll
patent: 3382002 (1968-05-01), Tabor
patent: 3402967 (1968-09-01), Edmonds et al.
patent: 3593811 (1971-07-01), Tedow
"Bore Hole Rescue Systems", Mining Congress Journal, Nov., 1978.

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