The South African Railways Class 34-500 of 1974 is a diesel-electric locomotive. Between 1974 and 1977, the state-owned South African Iron and Steel Corporation placed forty-four General Electric type U26C diesel-electric locomotives in service. They were employed on Iscor's 1974-built Sishen-Saldanha iron ore line and as heavy shunters at the Sishen mine. In 1977, another two locomotives were built for the Douglas Colliery near Witbank. Also in 1977, thirty-nine of the Iscor locomotives were transferred to the South African Railways where they were initially designated "Class 34-400 ex Iscor" and later became commonly known as Class 34-500.