A pair of miniature locomotives were passing through Salt Lake City, Utah, while being conveyed on a flat car, as these models were pretty heavy. But seriously ... Union Pacific GP15-1 Y589 and... (more)

GP15 Y589 is really working it's guts out switching long strings of cars, on the south end of Union Pacific's Salt Lake City North yard.

A UP GP15-1/SD40N combo pull cars from North Yard in Salt Lake City on April 10, 2014.

A rare Union Pacific CA-11 caboose trails UP's YRO52R, based out of the Fourth South yard in Salt Lake City. UP 25889 was built by International Car for the UP in July 1979. The covered hopper wil... (more)

Union Pacific's YRO52R switch job glides through Grant Tower in Salt Lake City, bound for the 4th South yard to tie up for the day.

Union Pacific's 'Fourth South Switcher' waits it's turn to head west through Grant Tower in Salt Lake City, Utah.

Union Pacific's YRO52R 'Fourth South Switcher' prepares to head through Grant Tower after making a set out at the SLGW interchange yard at 10th West. Former D&RGW caboose #01503 is utilized for se... (more)

Union Pacific's YRO52R switcher creeps along the Salt Lake Garfield & Western Railway interchange track at 10th West crossing. The SLG&W would forward these high cube box cars to the Salt Lake Int... (more)

Union Pacific's YRO52R switcher meanders slowly down the Salt Lake Garfield & Western Railway's interchange track at 10th West. The SLG&W will forward the box cars to industries in the Salt Lake I... (more)

Union Pacific's Fourth South Switcher, aka the YRO52R, smokes it up during a switch move while truck traffic roars overhead along Interstate 15 in downtown Salt Lake City.

Here's all you really need to assemble a true freight train in the modern age. Veteran D&RGW caboose 01503 trails Union Pacific's YRO52R switcher through Grant Tower, headed home to the Fourth Sou... (more)

Union Pacific's YRO52R switcher curves through Grant Tower at the completion of a day working industries west of downtown Salt Lake City. The ever present D&RGW caboose 01503 is along for the ride... (more)

A pair of true ugly ducklings dash along beautifully groomed trackage at Grant Tower in Salt Lake City. The YRO52R switcher just dropped of interchange traffic at the SLGW yard at 10th West. Utah'... (more)

Restin' on the hump.