DH heavy shunting locomotives get out on the mainline around Auckland frequently with port traffic transfers. This pair are returning with empties to Westfield from Wiri inland port. The DH class numbers only 6 and 5 of them are at Westfield. Originally ordered by Philippine National, NZ Railways bought them in 1978.
Trains on 3' 6" (1.067m) track from Whangarei to Bluff with virtually heritage rebuilt EMD and GE locomotives still the mainstay power. The network was privatized in 1990's and operated by Toll until 2008 when state owned KiwiRail was established.