These six rail cars once transported nuclear weapons. They were labelled "ATMX" and known as Safe Secure Railcars. Here at Pantext, they are either being stored or used to move nuclear waste. Originally the cars were uniformly white but later painted other colors in an attempt to disguise them.
http://en.wikipedia.org/wiki/White_Train
Nuclear Weapons Transport
jbottero
@ 2013-06-02 12:50:05
Considering that both ends of the track are dead-ends, I don't think this train is in operation anymore...