Man at Furnace Door
Note by George, III: There are six individual doors at this end of the furnace.
Four of the levers are in the closed position, and two are in the open position
(i.e., all the way down, against the side of the furnace). It is not clear who is
operating the mechanisms that pull the rail out of the furnace, then shift it
laterally, and finally push it towards the roll stands.