An area covering a number of historic past small copper-silver and barite workings in the greater Artipena district centred ~ 75 km east-northeast of Hawker was taken up mainly to investigate the hydrothermal copper mineralisation potential of fresh bedrock lying at depth beneath an unusual large linear gossan outcrop present at the Mammoth Black Ridge prospect on Martins Well Station. This gossan, which forms a prominent topographic ridge on the north-eastern side of the Willipa Dome fold structure, had formerly been worked in a very limited way for sideritic iron ore to use as smelting flux; the contained copper content being apparently residual and sparsely and irregularly disseminated. During the first licence year, the licensee began work by compiling available geological and geochemical data for the area, and undertook field checking of past mapping information. The company was of the opinion that previous dismissive evaluations of the base metal potential of the Mammoth Black Ridge prospect were wrong, and took the view that the low tenor of copper mineralisation seen at surface there is the result of extremely deep weathering and copper depletion that has occurred within the structure, such that it could alternatively be interpreted to represent the leached cap of a higher grade mineralised body of rock. Significantly, it was recognised that exotic Fe-hydroxides are present, as evidenced by locally large amounts of botryoidal/mammillary goethite. This was thought to indicate a high pH weathering environment capable of mobilising large amounts of iron. Therefore Alloy's exploration model treated the outcrop as being derived from a body dominated by siderite-pyrite +/- copper, silver and gold. The envisaged target was a late stage, low temperature, structurally controlled hydrothermal deposit possibly overlying granitic source rocks emplaced at depth, perhaps possessing scope for further supergene enrichment of copper in particular to have occurred at ancient and current water table levels, in a fashion similar to what is believed to have occurred at the famous Burra mine. Next the company performed reconnaisance rock chip geochemical sampling focussed on iron/manganese - rich outcrops situated around Mammoth Black Ridge and sub-economic copper mineralisation observed in old barite mines. 45 samples were collected and assayed for pathfinder trace elements. The results as interpreted by a consultant were conflicting in terms of suggesting a source target at depth beneath the surface mineralisation. Alloy at this point fortuitously discovered the existence of four poorly studied drill cores kept in government storage which it was thought had been obtained by historic, 1959-1960 diamond drilling at the Mammoth Black Ridge prospect. The company was able to inspect these cores in March 2015, and take chip samples to analyse. Lithologs made of these cores, when correlated with the distribution of mapped outcrop lithologies surrounding two past drill collars that had been found in the field, indicated that those collars might correspond to holes DD1 and DD2 which had been drilled to depths of 401 feet and 725 feet 9 inches respectively. Within the drill cores, gossan material and siderite unit intervals that are present were already split into halves, and were likely to have formerly been sampled, but no related assay records were on record at DPC. Based on the observed gossan textures, it was interpreted that the cored gossan remains in the highly leached zone, meaning that any underlying supergene and primary zones may not occur until below 100 m depth. The siderite unit intervals' relict sulphide mineralisation was noted as being less weathered than that in adjoining sediments, and based on new assays of 86 selected core samples, appeared to have a variable but low copper content and, at the end of hole DD2, slight arsenic enrichment. A mineralogist was retained to examine the siderite-hosted mineralisation in 4 samples taken from the DD2 core, and he said that the mineralisation observed consists of a polymetallic assemblage (Cu-Fe-As-Sb) that is clearly hydrothermal in origin. These findings considered together were interpreted to mean that the only way to know if economic copper mineralisation is present would be by drilling a number of holes along the Mammoth Black Ridge structure that are sufficient depth to reach fresh rock. During licence Year 2, Alloy conducted Google Earth photographic mapping and geological interpretation, follow-up ground truthing field inspections and mapping, and surface rock chip and lag soil geochemical sampling. 44 lag soil samples were taken along the Mammoth Black Ridge prospect ridge outcrop on a 100 m x 40 m spacing to try to define stronger mineralised zones within the siderite gossans, and some elevated copper was detected in the northern half of the northern gossan outcrop, where it was noted that barite is more commonly present. A number of potential gossans and host fracture structures interpreted from Google Earth and SARIG satellite photography were inspected during a number of days in the field. No new mineralised structures were located from this process, with only minor calcite in faults noted to the north-east of Mammoth Black Ridge. Field inspection of a number of historical anomalous rock chip sample sites also proved unrewarding, although one site having minor surface copper enrichment was seen to be related to two narrow, 1 m wide parallel siderite-rich ‘gossan’ structures very similar in appearance to Mammoth Black Ridge, that outcrop over at least 800 m strike length on an 060 degree trend. It was concluded that RC traverse drilling of the north-eastern structure at Mammoth Black Ridge is still the most viable remaining option for finding economic copper sulphides. Any test holes should be stepped back from the ridge to intersect the structure at 125 and 175 m depth, in order to most effectively define the depth of weathering and presence of any supergene mineralisation. During May 2018 it was belatedly decided by Alloy to allow tenure of El 5577 to lapse, and the previously submitted application to renew for the licence's fourth year was withdrawn.