West Kalgoorlie, AQHY 30031 with sulphuric acid tank CSA 0107, originally built by WAGR Midland Workshops in 1964/66 as a WF type flat waggon, then in 1997, following several recodes and modifications, was one of seventy five waggons converted to the WQH type to carry CSA sulphuric acid tanks between Hampton/Kalgoorlie and Perth/Kwinana, part of empty acid train 4405 departing in the yard. CSA 0107 was built by Vcare Engineering, India for Access Petrotec & Mining Solutions in 2015.