[Note: No formal annual reports were submitted to SADM for the 1993-1994 and 1994-1995 reporting years. Work done on the licence at this time is described by three consultants' reports which are held separately in Env 9502.] Exploration for economic Holocene surficial deposits of gypsum within an area of near-coastal salt lakes that have formed south-east of Streaky Bay has addressed the known large occurrence at Lake Purdilla, which in 1995-1996 was one of the largest unmined gypsum resources in Australia. Evaluation of retained sample material, geological logs and chemical assay results from the 1989 auger drilling performed by previous tenement holders was undertaken by Sceale Bay Development Corp., and 163 previously untested samples were submitted for assaying. In April and June 1996, a fresh campaign of hand auger drilling of dunes was performed, of 51 holes along 23 short traverses for 149.2 m of total sediment penetration; 136 new samples sent for assaying. The aim was to undertake a re-appraisal of existing data, supplemented with new data from previously untested places, to define a mineable quantity of high grade, low salt content lakebed -derived seed gypsum existing in dunes adjacent to the proposed initial mine site in the south-eastern corner of Lake Purdilla. An in situ indicated gypsum resource of 440,000 t was then calculated using a bulk density of 1.3 t/cubic m, within dunes which are up to 8 m high. During licence Year 4, Goldstream Mining NL took out an option on EL 1821 to allow it to conduct gold exploration there. In October 1996, regional calcrete geochemical sampling was performed via 119 samples collected along roadsides at ~ 1 km intervals. However, this sampling was conducted without prior assessment of the regolith profile, which subsequently was shown to be inappropriate for calcrete sampling. Consequently, the highest assay results of only ~1 ppb Au were obtained from 14 sample sites, with the remainder yielding assay values of below detection limit. The calcrete samples were also analysed for Cu and As, with no significant results being returned. Goldstream decided to abandon sampling the regolith for gold pathfinders, and instead opted to use aeromagnetic data imagery to identify possible RAB bedrock drilling targets. During licence Year 5, SBDC undertook a pre-feasibility study for mining gypsum at Lake Purdilla and surrounds, which involved the recalculation in July 1997 of a measured resource of 17 Mt and an indicated resource of 59 Mt. Prior to doing this work, in January 1997, 30 push-tube cores of the sediments were recovered on a 200m x 300 m grid, and in February 1997, 65 machine augered holes (K1 - 65) were put in to delineate the measured resource. Over the next two years, SBDC deliberated whether to accept the mining project risks and advance its conceptual development to the full feasibility stage. No field work was done, but the company continued to monitor the export market for bulk gypsum, with a view to planning a ship loading facility.