Sulfur Extraction Train

I have a company calendar from BNSF and the picture for the month of July is of a “sulfur extraction train” from Houston on it’s way to Colo.

It’s got a single GE Dash 9 for power but the rest of the train is sort of weird. All total there’s about seven cars, all flatcars except for a large drum like cylinder with some kind of control cabs on either end of the drum. This flat car with the drum is cut in behind a caboose mid-train and an empty flat car is cut in behind the drum car with a (bay window?) caboose on the rear.

Anybody know where this train is going and what it does or how the extractor operates?

I think it would be interesting to watch it do it’s thing.

Solvay Chemical (North American Soda Ash)…Parachute, CO (Between Glenwood Springs and Grand Junction, CO on ex DRGW Transcon)…possibly unloaded at Rifle, CO

Methinks the machine was meant for a stationary application, and unloaded, as MC says.

The title, however, somehow suggested a train going from place to place, extracting sulfur as it moves.