The usual crew was a fireman and an engineer...did the camels possibly run 3 for this type of set up so as not to have a blind side...2nd guy, in cab, for the engineer could yell over the boiler top if there was trouble...?...maybe the fireman had a dual purpose...shovel and watch the opposite side for the engineer...?
Cab forward and an auto loader in back would've been the hot set up...just sayin...