the solitary member of the S class in 1877 (the main S class was not introduced until 1880), but it was typically known as Robina. Industrial locomotives A number of industrial locomotives were used by various operators connecting to the national rail network: 0-6-0 shunting locomotives Similar to the NZR DS class: Drewry 2248/1947 was built for the Ohai Railway Board as their NO 1. The railway was operated by the State Mines, and in 1968, Drewry 2248 was dispatched with its sister, NO 2, to the State Mines railway between Stirling and Kaitangata in Otago. In 1974, both locomotives moved to Rotowaro in the North Island, where they both finished working. In 1986, the locomotive was withdrawn and sold to the Bush Tramway Club at Pukemiro Junction on the former Glen Afton Branch. On 21 October 2014, Drewry 2248 arrived at the Rimutaka Incline Railway Heritage Trusts Maymorn site after being purchased for restoration. Currently, Drewry 2248 is wearing a dark green livery in place of its original red. Drewry 2585/1957 shares a similar operating history to Drewry 2248. Built for the ORB as their NO 2, it ended up at Rotowaro in 1986, and was purchased by the Bush Tramway Club. However, in 2005 it was purchased by the Wallis family to start the 'Waikato Railway Heritage Trust', and moved to nearby Ngauruwahia. In April 2008 it moved again to Ngongotahā, and is now owned by the Rotorua-Ngongotaha Railway Trust. It is currently being overhauled, and is painted in State Mines yellow instead of its original red. Whakatane Board Mills 103 (maker's 2258/1947) was built for use over the WBM Matahina Tramway, bringing logs back from the Matahina area over the Tramway to the mill via the NZR Taneatua Branch. It was later joined by Whakatane Board Mills 104 (maker's 2489/1951); together, the two diesels displaced ex-NZR 0-6-2T tank locomotives FA 41 and FA 250. In later years, the two locomotives were limited to the short length of line between the mill and the NZR connection at Awakeri and were repainted from the original black with yellow trim into a white with orange band scheme. In 1999, Tranz Rail purchased the line between Awakeri and the mill and took over shunting operations with DBR and DSC class diesel locomotives. The two Drewrys were then onsold to Forest Loaders, a subcontractor working for Tranz Rail in the Portland area,