Method of, and apparatus for, winning mineral material

Details Method of, and apparatus for, winning mineral material Method of, and apparatus for, winning mineral material

1981-03-09

1983-07-05

Purser, Ernest R.

Mining or in situ disintegration of hard material

Processes

Stabilizing underground structure

299 33, 299 43, E21C 2724, E21C 3516

Patent

active

043914705

ABSTRACT:
The specification discloses a method of, and apparatus for, winning mineral material from the pillars left by the bord-and-pillar mining process. An arcuate longwall face, which may be convex or concave, is formed along a row of pillars. The mineral material in the pillars is won by mechanical winning means such as a plough, the pillars in each row being won in a non-uniform manner. Some of the mineral material won from the longwall face may be used to fill the stalls left between the pillars behind the longwall face.

REFERENCES:
patent: 2891778 (1959-06-01), Milik
patent: 3945680 (1976-03-01), Henrich et al.
patent: 3999804 (1976-12-01), Simpson
patent: 4095845 (1978-06-01), Paurat

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