Mining or underground quarrying method and installation for impl

Details Mining or underground quarrying method and installation for impl Mining or underground quarrying method and installation for impl

1989-03-16

1990-12-25

Britts, Ramon S.

Mining or in situ disintegration of hard material

Processes

Stabilizing underground structure

E21C 4100, E21D 1900

Patent

active

049797808

ABSTRACT:
In a mining or underground quarrying method by downward slicing under a roof, the roof is divided into a plurality of areas supported independently of one another. As the core is mined from under this roof, these areas are progressively caved in to a limited height. The method is particularly applicable to mining coal and metal ores.

REFERENCES:
patent: 1630589 (1927-05-01), Taber

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