Method for working steeply dipping vein ores with vertically downwards propagating pillars
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United States of America Patent
Stats
-
Aug 11, 1992
Grant Date -
N/A
app pub date -
Apr 29, 1991
filing date -
Apr 30, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a cut-and fill method of a mine, where the working is done by pillar working, which propagates vertically downwards. The working is done by placing the stope and the pillars interlaced with each other when propagating downwards. The pillars are made by the hardening fill-method and likewise, at the bottom of the excavated stope, in the lower corners, a bed of hardening fill is made.
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- Non-US Classification not provided for expired patents
Cited Art Landscape
Patent Citation Ranking
- Citation Ranking not provided for expired patents
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