NZR WE class
 The NZR WE Class were rebuilt from earlier Addington built B class locomotives. In service the first two were tried on the Rimutaka Incline however they lacked the required adhesion on the 1 in 15 grade. They were later transferred to Greymouth for use on the Rewanui Incline where they were far more successful on the line's 1 in 25 grade. It is not known if they ever operated on the Roa Incline.The three We class locomotives lasted into the 1960's.