The World's Largest Steam Engine! UP Big Boy No. 4014 Climbing The Wasatch Grade Unassisted!
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The World's Largest Steam Engine! UP Big Boy No. 4014 Climbing The Wasatch Grade Unassisted!
READ: Shot on 4/20/26, No. 4014 makes its foray back onto home rails, running unassisted up the 1.14% grade for which the Big Boy class of engines was designed to conquer. Trailing tonnage behind the main tender is approximately 920 tons. Here we see the train about a mile away from the top of the grade at Wasatch. Enjoy =) FAQ (Read before ...
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