The Government of Canada’s terminology and linguistic data bank.
crown: The curved roof of a tunnel. 2, record 1, English, - crown%20pillar
pillar: An area of coal or ore left to support the overlying strata or hanging wall in a mine. 3, record 1, English, - crown%20pillar
pilier : (mines) Partie de gisement abandonnée, temporairement ou définitivement, pour soutenir le toit d'une excavation souterraine. 2, record 1, French, - pilier%20de%20couronne
couronne : (mines) plafond d'une galerie. 2, record 1, French, - pilier%20de%20couronne
© Public Works and Government Services Canada, 2021
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