West Kalgoorlie, AQHY 30004 with sulphuric acid tank CSA 0015, originally built by the WAGR Midland Workshops in 1964/66 as a WF type flat waggon, then in 1997, following several recodes and modifications, was the lowest of seventy five waggons converted to the WQH type to carry CSA sulphuric acid tanks between Hampton/Kalgoorlie and Perth/Kwinana.