Does anyone knows what Tehachapi rail served industrys are? On Google maps I saw a tank car covered building facility, a large sand or cement factory. (Couldn’t tell by the structure) with a lot of 2 or 3 bay cylinder covered hoppers. (Form the sky they look like 2 bay to me). The last time I saw it there was a power plant, but when I looked again it was gone. I hope I’m not losing my mind.
One of the industries you’re seeing sounds like the cement plant at the timetable location called Monolith. it’s photographed often and there are a lot of photos on various railfan sites, such as http://www.rrpicturearchives.net/locThumbs.aspx?id=15917 .
The cement plant is Lehigh Southwest Cement (formerly Calaveras Cement). It receives coal in open top hoppers for the kilns. That is probably what you thought was a power plant.