#4006 Union Pacific

#4006 Union Pacific Big Boy

Built - American Locomotive Company (Alco) in 1941

Engine is coal fired with a stoker

One of 25 built, 8 remain

Articulated simple heavy freight engine, 4-8-8-4

Was built to hall heavy freight trains between Green River WY and Ogden UT

Weight 600 tons (1.2 million pounds)

132 feet long

Top speed 80 mph

6,900 horsepower

Engine is complete

Donated by Union Pacific Railroad