The Oakwood Press Book on the C&HPR (Locomotion Papers No 10) by A.Rimmer, states that D2383 was used on the Sheep Pasture Top to Middleton Bottom section from 26th August 1966 until Sheep Pasture incline was closed on 9th April 1967. It also states similar shunters had been used at Cromford Goods from April 1965, allocated to Derby MPD. - Also notes a 350hp DE was tried on the Middleton - Fridden section in late August 1966, but assumed not successful.