Union Pacific Big Boy type steam locomotive No. 4011 ross west at Granite, Wyoming, in 1956. Jim Ehernberger 4-8-8-4 •YEARS BUILT: 1941 to 1944 •MANUFACTURER: Alco •OPERATED ON: Union Pacific •NAME: Big Boy •QUANTITY: 25 •BOILER PRESSURE: 300 psi •KNOWN FOR: Among the heaviest and most powerful reciprocating-piston steam locomotives ever built •STATUS: Eight preserved: […]
Locomotive profile: 4-8-8-4 Big Boy type steam locomotive
