Fragmentation of an underground ore body

Details Fragmentation of an underground ore body Fragmentation of an underground ore body

1986-01-17

1990-10-30

Neuder, William P.

Mining or in situ disintegration of hard material

Processes

Explosive

166271, 166259, 299 4, 102311, E21B 4300, E21B 43263

Patent

active

049664166

ABSTRACT:
The invention provides a process for converting subterraneous ore overlain by an adjacent formation of porous rock into an enclosed zone of fragmented ore by first blasting a void space in the porous rock and secondly explosively expanding the ore into the void space. The invention also provides a process for the extraction and recovery of values from a subterraneous ore overlain by an adjacent formation of porous rock. The invention is particularly useful for the extraction and recovery of carbonaceous values from subterraneous oil shale.

REFERENCES:
patent: 4210366 (1980-07-01), Hutchins et al.
patent: 4223734 (1980-09-01), Lekas

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