In-the-hole drill

Details In-the-hole drill In-the-hole drill

E - Fixed Constructions

21

B

255/37

E21B 7/02 (2006.01)

Patent

CA 1219253

IN-THE-HOLE DRILL ABSTRACT OF THE DISCLOSURE A compact, easily disassembled, minimun headroom drilling unit is disclosed. The drill, especially useful for newly developed vertical retreat mining methods, drills at compound angles from the vertical and horizontal directions. Low headroom is achieved by the employment of a double acting hydraulic cylinder.

444715

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