RjB 20, 21 and 22 were three diesel-hydraulic locomotives operated by Norsk Transport on Rjukanbanen in Norway. They were mostly used for shunting at Rjukan and at Mæl. They were delivered in 1961, and remained in service until 1991 when the line closed; no. 20 remains at Rjukan, while no. 21 was sold to Pepeteries de Golbey of France and no. 22 was transferred to Norsk Hydro at Menstad. References Norsk Transport locomotives Diesel locomotives of Norway Railway locomotives introduced in 1961 1961 establishments in Norway Standard gauge locomotives of Norway