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pillar caving
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Subject
English
German
mining.
pillar caving
kombinierter Kammerpfeilerbruchbau
(method)
gen.
pillar caving
Abbau von Erzschweben
mining.
room-and-
pillar caving
Pfeilerbruchbau
mining.
shrinkage stope and
pillar caving
kombinierter Kammerpfeilerbruchbau
(method)
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