4000形蒸気機関車

The Union Pacific Big Boy is a type of an articulated 4-8-8-4 Steam locomotive manufactured by the American Locomotive Company (ALCO) between 1941 and 1944. Operated in revenue service by the Union Pacific Railroad to haul Heavy Freight until 1962.

Example

Union Pacific Big Boy

Experimental Smoke Deflectors

See also

• Locomotive
• Steam locomotive

External links

• https://en.wikipedia.org/wiki/Union_Pacific_Big_Boy

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