Underground mining system

Details Underground mining system Underground mining system

1992-08-20

1994-06-14

Dang, Hoang C.

Boring or penetrating the earth

With above-ground means for preparing or separating drilling...

175207, E21B 2106

Patent

active

053201884

ABSTRACT:
There is disclosed an apparatus and method for drilling underground. The apparatus includes a conventional drilling bit and a shroud disposed around the drill bit to produce a confined for the suspension of drilling debris. The debris is withdrawn under suction from the area by a conduit system associated with the shroud and a cyclonic filter structure.

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