The Government Keystone Drill Rig (based in Dunedin) Bannockburn - location unknown Drilled 65 ft of 6 inch cased hole in 7 hours. L to R: 1. Mr G Seale - operator (*) 2. 3. Drill rig supplied by the Keystone Driller Company or Beaver Falls, Pennsylvania, USA. Keystone Tractor Drill No 3, with 11 horsepower steam engine, able to drill 70-100 ft of 6 inch dia. cased hole per day. * the operator had 10 years of experience in Western Australia. It is possible that one of the other men may have been Edward James Iles.