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WordsAmEn
American Word:
room-and-pillar
room-and-pillar adjective mining noting a means of extracting coal or other minerals from lagered underground deposits by first cutting out rooms, then robbing the pillars between them. kamravágat elkészítése a bányában.
British Word:
bord-and-pillar
bord-and-pillar adjective mining noting a means of extracting coal or other minerals from lagered underground deposits by first cutting out rooms, then robbing the pillars between them. kamravágat elkészítése a bányában.
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