I've shown other angles of this same equipment in the past. This is Willits California on the old Northwestern Pacific.
Amtrak was testing bio-diesel on #500 used to pull the Heartland Flyer shown here in Fort Worth in 2012.
From November 2002 on the former SP main east of Yuma at Blaisdell, AZ, a stack train rolls east. Lead unit is ex-C&NW.
Went to Los Angeles, Ca for orientation at a new job this past week. Spent Tuesday-Friday down in the Ontario/Rancho Cucamonga area. Free bus trip down from Turlock (never do that again!) and took what photos that I could from the bus and the company shuttle. Some aren't very good but most were done on the fly.
Before I forget, Monday of last week, before my trip to LA, I had to go up to Patterson, Ca. for a pre-screening drug test. On the way home to Newman I passed through the very small town of Crows Landing. There's always a string of tank cars on a siding there, along with a platform so personnel can access the hatch. This day, there was a Darling tanker semi parked along side with a hose running from the dome to the lower rear of the trailer. I think this would be a great small, simple industry for a model railroader:
I did some research. Darling has a rendering plant a couple of miles to the east of Crows Landing. I though that maybe Darling was unloading some kind of chemical used in the process, but I now think they shipping some of the finished product out. One reason is that the hose from the trailer is connected to a valve on the lower rear of the tank, which I think is how the trailer is unloaded. the other end of the hose goes up to the dome of the tank car. I think if the tank car was being unloaded, it would be the other way around. Of course, this is just conjecture on my part.