At sunset, two UP westbounds prepare to depart Tucson Yard. The Tucson yardmaster will let their crews know when they can proceed to the mainline.

The snow-covered Oquirrh Mountains provide a backdrop for an eastbound freight which is holding east of Smelter on the UP Lynndyl Sub.

Readied diesels on the wye at UP Yard Center in Dolton. On the right, MoPac Heritage Diesel UP 1982 is queued to lead ZYCHO1 to Houston departing (of course) after sunset. Ahead, "heritage" (unpat... (more)

Power for rock train loading at Martin-Marietta's Garwood Plant.