Underground drilling and casing method and apparatus

Details Underground drilling and casing method and apparatus Underground drilling and casing method and apparatus

1977-09-23

1979-12-18

Pate, III, William

Boring or penetrating the earth

Processes

175 94, 175171, 175257, 175325, E21D 300, E21B 1900

Patent

active

041790014

ABSTRACT:
In an underground mine, a machine for drilling upwardly is placed in one tunnel of the mine and is used to drill a vertical shaft communicating with another tunnel at a higher elevation. The machine is operated so as to install a liner or casing in the shaft in a step-by-step fashion, substantially concurrently with the corresponding steps of the drilling operation.

REFERENCES:
patent: 2588068 (1952-03-01), Williams et al.
patent: 2751203 (1956-06-01), Compton
patent: 3540536 (1970-11-01), Huszak
patent: 3645343 (1972-02-01), Mays
patent: 4009909 (1977-03-01), Robbins et al.

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