Apparatus for extracting minerals through a borehole

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by fluid pressure

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Details

175284, 299 17, 299 34, E21B 926

Patent

active

042781370

ABSTRACT:
An apparatus consisting of pipe sections pivotally joined which can be insert in a borehole when in straight position and manipulated to a zigzag position to loosen minerals outside the wall of the borehole.

REFERENCES:
patent: 2450223 (1948-09-01), Barbour
patent: 2690325 (1954-09-01), Dismukes
patent: 2847189 (1958-08-01), Shook

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