The TR classification has been applied to two former industrial locomotives. One of these is TR 81, which was purchased from the Ohai Railway Board in 1955. Built by the Drewry Car Co in the 1930s, it is similar to the first generation 0-4-0 Drewry TRs but was originally fitted with the Gardner 6LW diesel engine. The other is A&G Price no. 222 which was acquired from Pacific Metal Industries in the early 2000s. It was built in 1968 with a diesel engine and is of the 0-6-0 wheel arrangement. Originally reclassified DSA 222 it now carries the number TR 1026 and is leased for industrial use.