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Meaning of
"room-and-pillar (mining)"
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Spanish
English
room-and-pillar (mining)
Google
room-and-pillar (mining)
Linguee
room-and-pillar (mining)
bab.la
room-and-pillar (mining)
Reverso Context
room-and-pillar (mining)
dict.cc
room-and-pillar (mining)
Wikipedia