Fragmentation of an underground ore body
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United States of America Patent
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Oct 30, 1990
Issued Date -
N/A
app pub date -
Jan 17, 1986
filing date -
Jul 21, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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