Hunslet No.849, built in 1904 and delivered new to the Dinorwic Quarry. Originally running as simply No. 7 , this locomotive also later received the name Wild Aster after a racehorse. When purchased by the Lake Railway in 1969 it was in a worn-out state, having last worked in the quarry some ten years earlier. Completely rebuilt in our own workshops, it returned to service in 1988, now carrying the name Thomas Bach ('Little Thomas'), the nickname of its regular driver in quarry days.