Air box

1. A rectangular wooden pipe or tube made in lengths of 9 to 15 ft (2.7 to 4.6 m) for ventilating a heading or a sinking shaft. Fay
2. A box for holding air. Fay
3. The conduit through which air for heating rooms is supplied to a furnace. Standard, 2
   Source: Dictionary of Mining, Mineral, and Related Terms