OmniTRAX 4011 (ex-Canadian National GP40-2LW) moves a refrigerated car through Windsor, Colorado.

BNSF 5321 (Dash9) gets ready to move a cut of sand cars out of an industrial complex at Windsor, Colorado.

OmniTRAX #4013 (GP40-2LW) sits on a track in Windsor, Colorado.

Two fresh-looking OmniTRAX GP40-2LW's (former Canadian National motors) hold the track at the large industrial facility in Windsor, Colorado.

OmniTRAX operates a number of former Canadian National GP40-2LW's. This one is painted in gray and sports the Great Western Railroad logo.

OMLX 409 tied down at the Windsor Industrial Park.

OMLX 4011 tied down at the Windsor Industrial Park.

Fresh painted OMLX 4013 at the Windsor Industrial park.

UP 8762 (SD70ACe) leads a freight through Windsor, Colorado.

UP 7819 (C45ACCTE) returns the LaSalle local from Windsor, Colorado.

UP 6538 (AC4400CW) has just lashed up, with the assistance of heritage UP 1995 (C&NW) and anther ACe, to a windmill blade train at the Vestas plant in Windsor, Colorado. It will soon take the bla... (more)

UP 6538 (AC4400CW) runs down the Greeley Sub with heritage UP 1995 and another ACe to pick up a Vestas windmill blade train in Windsor, Colorado.

BNSF 6706 (ES44C4) and Canadian National / BC Rail 4608 (C40-8M) running hoppers through Windsor, Colorado.

A long line of hoppers moves past a recently harvested field in Windsor, Colorado

Rain moves over the Front Range Foothills and Mountains as a BNSF sand train patiently sits at the Great Western Industrial Park in Windsor, Colorado on April 25, 2016.