디젤 기관차
Diesels were first introduced to the Durango Yard in the 1960s with Diesel locomotive #50. Today, #50 is now on display at the Colorado Railroad Museum in Golden, Colorado. The United States Transportation Corps. also had a six-axle narrow-gauge Diesel locomotive (#3000) for trial use in Durango in the 1950s, which saw limited use. Diesel engine #5 is a 45-ton center-cab engine built by General Electric in May 1960, originally as Algoma Steel #5, and was acquired by the D&amp;SNG in 2002. Diesel engine #9 was first acquired by the D&amp;SNG in March 2006 and is a 92-ton center-cab diesel built by General Electric. #9 was later traded to the Georgetown Loop Railroad in March 2017 in exchange for its Porter 80-ton Diesel engine #1203. It is currently in service on the GLRY.