Door for a mine stopping

A door for closing a doorway in a mine stopping, said door having hinge means at an edge thereof for hingedly mounting the door to swing on an axis adjacent an edge of the doorway between a closed position engaging a face of the stopping all around the doorway and an open position swung away from the doorway, a latch for latching the door closed, said latch comprising a bar extending through an opening in the door adjacent an edge of the door from the outside toward the inside of the door and adapted to extend into the doorway, said bar having a detent portion adjacent its inner end, said bar being movable inwardly and outwardly in said opening and being swingable in said opening about an axis transverse to the bar for engagement of said detent portion behind part of the stopping to latch the door in its closed position, and spring means reacting from the door on the bar to bias the bar outwardly in the opening to ensure engagement of said detent portion behind said part of the stopping to latch the door in its closed position.