Union Pacific U50 No. 45 at Kearney, Nebraska, in September 1970.
Francis Wiener, T. Hoffman Collection
U50
•YEARS BUILT: 1963-1965, 1969-1971
•MANUFACTURER: General Electric
•OPERATED ON: Union Pacific, Southern Pacific
•NAMES: U50 and U50C; nicknames, Twin Diesels, Double Diesels, Whirlybirds, Choppers, Stalkcutters, Rock Crushers
•QUANTITY: 66
•HORSEPOWER: 5,000
•KNOWN FOR: Large cab with curved nose; long and loud
•STATUS: All were scrapped
