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The American Locomotive Company built just 25 Big Boy models for Union Pacific during World War II. Big Boy No. 4014 is a 132-foot-long, 1.2-million-pound locomotive with a water capacity of ...
FORT WORTH, Texas - The world's largest operating steam locomotive will be in Fort Worth through the weekend. Union Pacific's Big Boy No. 4014 will chug into Fort Worth to be on display Thursday.