This project proposal relates to the potential for mining a vast gypsum deposit located adjacent to Sceale Bay, about 14 km south of Streaky Bay on the west coast of South Australia. Preliminary estimates put the ore reserves of gypsum of 88% purity or more at around 60 million tonnes. The reserves are held by the Sceale Bay Development Corporation, an unincorporated body, in the form of mining leases over land. To date application has been made to undertake further exploration work, which has already been approved. In addition, there is considerable scope for mining a range of other minerals including kaolin, salt and lime sands. The development will have access to Sceale Bay as the site for export of ore. The project development would include a mooring facility. Soundings in the harbour indicate that vessels of up to 80,000 metric tons deadweight would be able to moor securely in the bay. It is proposed that the development would proceed in two stages: Stage 1. This would involve proving the commercial viability and marketability of the product, including confirming ore reserves, specifying mine construction and harbour requirements, planning end-use requirements, and setting up plans for the manufacture of gypsum buiolding board products. It would take about 12 months to complete this investigation. Stage 2. Design, construction and commissioning of all gypsum production plant and product manufacturing facilities. This would take from 18 months to 3 years from planning through to commercial trial shipment stage. At full development, the project would be able to export about 1.5 million tonnes annually, but this depends on markets for the raw ores, and the success of developmental plans for the beneficiating processes for adding value to the raw gypsum at the mine site. There is considerable scope for the manufacture of building materials from gypsum.