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Spectators view the historic locomotive, Union Pacific Big Boy No. 4014 at Metrolink Station, Sunday, Jan. 26, 2014, in Covina, Calif. The 600-ton Big Boy locomotive left the Pomona fairgrounds on its way to a Union Pacific rail yard in Colton, about 60 miles away, where it will be available for two weekends of public viewing before moving on to Cheyenne, Wyo., for restoration work. The goal is to eventually get Engine 4014 back on the rails, said Union Pacific spokesman Aaron Hunt. (AP Photo/Ringo H.W. Chiu)

Big Boy locomotive begins California farewell tour

In its prime, a massive steam locomotive known as Big Boy No. 4014 was a moving eruption of smoke and vapor, a 6,300-horsepower brute dragging heavy freight trains over the mountains of Wyoming and Utah.

It's been silent for half a century, pushed aside by more efficient diesels, but now it's coming back to life. The Union Pacific Railroad is embarking on a yearslong restoration project that will put No. 4014 back to work pulling special excursion trains. (AP)

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