BS 618 & 626 at Ranchi At Ranchi on the South Eastern Railway, BS class narrow gauge(2'6") 2-8-2s No. 618 and 626 built in the UK in 1915 by Nasmyth Wilson and North British respectively. They are being prepared prior to running an empty iron ore train to the mines at Lohardaga later in the day on 1979.01.10