pillar robbing

pillar robbing

[′pil·ər ‚räb·iŋ]
(mining engineering)
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References in periodicals archive ?
Contrary to the normal understanding, well planned and managed mines in which pillar robbing is practiced, will give measurably higher extraction than longwall, and comparable productivities.
The productivity of this underground mine is forecast to be 50 t/man/shift and ore recovery should be 72% after pillar robbing on retreat.