Built in 1968 by A and G Price in Thames #221 is a 0-6-0 diesel hydraulic shunting locomotive. 221 was built for use at the New Zealand Steel mill at Glenbrook south of Auckland. Powered originally by a 315hp Rolls Royce engine it is now powered by a similar horse power Perkins unit. Used at the steel mill up until 2000, a damaged final drive saw the locomotive withdrawn from service.