Union Pacific Big Boy No. 4014 on the Mainline 🚂 The legendary UP 4014 “Big Boy”, a massive 4-8-8-4 articulated steam locomotive, advances with authority, its deep exhaust echoing as steam drifts skyward. Built by ALCO in 1941, this 1.1-million-pound giant was designed for heavy freight service, showcasing unmatched tractive effort and engineering power—an iconic symbol of American steam at its peak. | Satya Singh79
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