I took this photo on a foggy morning in November of 2006. We are at the Metra River Forest Illinois commuter rail depot. A westbound Union Pacific RR empty unit coal train is seen leaving Chicago, and headed west to the strip mines, in the state of Wyoming. Loaded unit coal trains that enter Chicago and other midwestern citties, usually originate at the various strip mines in Wyomings powder river basin. For Chicago, it's loads in and empties out in regards to unit coal train traffic. These trains are generally for large power generating plants.