Trains still stopped at Lamont for fuel and water. In fact in the midst of the World War II, a steel coal dock from the Great Northern in Montana was moved to Lamont to replace the aging wooden dock in 1944. Steam locomotives last passed through Lamont on June 22, 1956, with diesel-electric locomotives hauling the trains thereafter. Fueling facilities for the diesel locomotives had been constructed at Lamont after WWII, but were abandoned in 1957 when they began to fuel in Pasco.