A few weeks ago I saw this unitized work train on a spur in Chiloquin, Oregon. I haven't seen this kind of equipment before. The train carries its own crane which can travel along all the cars. I didn't get a good look at the other end, but I suspect it is an unpowered control cab. Can anyone tell us the particulars of the presumed custom-built locomotive unit?
Incidentally, Union Pacific has a newer maintenance station at this location.