X1735 was built in 1914 by Industrial Locomotive Works. It was originally steam-powered, with its own boiler. Later in life it was converted to diesel power. Burlington Northern retired it the mid-80's and donated it to the Minnesota Transportation Museum on 10/27/1985, along with boom car BN 959439 (in foreground).
Great Northern
X1735 Derrick
Great Northern X1735 is a 150-ton Derrick. It was designed to place cars and locomotives back on the track after a wreck. Derricks typically come in 100- to 250-ton capacities, so X1735 is a medium-sized example.