#mine  excavation in the earth from which ores and minerals are extracted
  supertype:  hole_in_the_ground__excavation  a hole in the ground made by excavating
  subtype:  coal_mine  copper_mine  goldmine  salt_mine  silver_mine  strip_mine  sulphur_mine
  part:  adit  mineshaft  shaft.passage
  part of:  colliery__pit  a workplace consisting of a coal mine plus all the buildings and equipment connected with it

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