| Union Pacific Railroad GP30 724 and GP9m 340 at Kansas City, Missouri on an unknown day in April 1980, Kodachrome by Chuck Zeiler. Number 724 was built in March 1963 (c/n 28204), retired in April 1982 and sold for scrap. Number 340 was built in September 1957 (c/n 23696) and was retired April 2, 1981. It began as a normal 1750 hp GP9, but between 1962-65 the UP installed EMD turbochargers on 55 of its 300-series GP9's, creating 2000 hp GP9's, or, as they became known, Omaha GP20's. The Omaha GP20's also received large 2400 gallon fuel tanks and some were further modified with heaters in the tanks to allow them to use Bunker C fuel oil. Those locomotives were converted back to diesel fuel in the 1970's. However, as the conversion back to diesel was taking place, the UP was adding 2400 gallon tanks to some of the un-converted Omaha GP20's as well as to some of the un-turbocharged GP9's. So, while number 340 shows a larger fuel tank, it is unknown if it was ever converted to burn Bunker C fuel. |