Mining method and apparatus

Details Mining method and apparatus Mining method and apparatus

1981-02-17

1983-03-29

Purser, Ernest R.

Mining or in situ disintegration of hard material

Processes

Stabilizing underground structure

299 12, 405288, E21C 4104, E21D 1500

Patent

active

043781322

ABSTRACT:
A method of single-entry mining of coal and analogous minerals is disclosed, which permits substantially 100% extraction of the coal or other mineral in a seam. All operations are carried out under hydraulic steel roof supports adjacent the mine face; farther back the roof is supported by non-yielding cast-in-situ pillars of quick-setting concrete rather than coal pillars or other supports. Mining machinery for these purposes is also disclosed.

REFERENCES:
patent: 2521888 (1950-09-01), Wilson
patent: 3591542 (1971-07-01), Bonnel et al.
patent: 3650564 (1972-03-01), Williamson
patent: 4030752 (1977-06-01), Simpson
patent: 4175481 (1979-11-01), Burgess
patent: 4255071 (1981-03-01), Koppers et al.
patent: 4277204 (1981-07-01), Koppers et al.

Affiliated with

Also associated with

Rating

Mining method and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Mining method and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mining method and apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1202000