This photo illustrates what goes on to the track structure during undercutting work as Union Pacific No. 902053 works on main 2 at McGrew, Nebraska, on the South Morrill Subdivision on July 26, 20... (more)

As can be imagined, cleaning ballast can be a dirty, grimy job as seen here as UP No. 902053 undercutter works at McGrew, Nebraska, on July 26, 2009. Workers constantly watch the machine for probl... (more)

UP No. 902053 is a Plasser & Theurer RM 2003 undercutter that specializes in cleaning ballast. Over time, ballast can break down, and other impurities like sand and dirt can further create drainag... (more)

A Union Pacific undercutter works on main 2 at McGrew, Nebraska, over the South Morrill Subdivision on July 26, 2009. UP No. 902053 is a Plasser & Theurer RM 2003 undercutter that specializes in c... (more)

A Union Pacific undercutter works on main 2 at McGrew, Nebraska, on the busy South Morrill Subdivision on July 26, 2009. UP No. 902053 is a Plasser & Theurer RM 2003 undercutter that specializes i... (more)