4751 leads 4104 on train 125 from Whangarei approaching Swanson for a slot in between electric units serving western suburbs. Log traffic will cease beyond Whangarei later this year with the remaining 199Km of the line under threat of closure.
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.