The FM H-10-44 was a yard switcher produced by Fairbanks-Morse from August, 1944–March, 1950. The units featured a 1,000-horsepower, six-cylinder opposed piston engine prime mover, and were configured in a B-B wheel arrangement mounted atop a pair of two-axle AAR Type-A switcher trucks, with all axles powered. Many H-10-44s received modifications that increased their horsepower rating to 1,200 hp .
Raven Pulp & Paper recently acquired #1 from the Tenino Western. It was formerly Weyehauser Logging #1 where it toiled for many years hauling logs out of the Pacific Northwest forests.