ALCO locomotive 5310

ALCO (American Locomotive Company) 5310 is an RS-1 built in July, 1951, for the U.S. Atomic Energy Commission's Dupont/Savannah River Plant. It had the ALCO construction number 79053.

The engine was transferred to Martin Marietta at Savannah River where it was given the designation 39-5310. It was transferred to the Department of Energy's K-25 facility at Oak Ridge, Tennessee, in 1994. From 1994 to 2000 it was leased to Southern Freight Railroad at the K-25 facility. Beginning in 2000, it was leased to the Southern Appalachia Railway Museum who use it as regular power on excursion passenger trains through the K-25 facility.

Locomotive 5308, another ALCO RS-1, also works the former K-25 facility. It is operated by the freight carrier and is occasionally used as power on Southern Appalachia Railway Museum excursion trains.