In late November 2012, three adjoining areas in the central Gawler Craton were taken up by Woomera Exploration Limited (WEX), an unlisted public company, for the purpose of minerals exploration. Within the subject licence area which is centred ~22 km north-northwest of Kingoonya, the company's exploration target is possible economic buried IOCG type base and precious metals mineralisation that may have formed in Mesoproterozoic basement rocks. During the first licence year the company performed a desktop review of previous exploration data for the subject area. It was found that very few basement-penetrating drillholes exist there. Within the region containing ELs 5113-5115, DMITRE were currently conducting an extensive 1 km x 1 km grid ground-based gravity survey to generate data that will help promote mineral prospectivity. WEX proposed to supplement the relevant data from this gravity survey by infilling the 1 km grid to a precision of 500 m station spacing in the overlapping area, and intended to conduct its own gravity survey at a 500 m grid spacing on the rest of its licence ground. WEX also planned to extend the ground geophysical surveys conducted by CRAE on EL 1315 in 1986/1987, with the aim of re-modelling data for the Lake Labyrinth West target that was drilled in 1987-1988, and then it would drill test the body that appeared to be causing the major magnetic low anomaly. During licence Year 2, however, WEX engaged in pursuing investment opportunities in the resources sector. In line with this strategy, the company purchased Norsa Exploration Pty Ltd (Norsa) and as a result of this acquisition, it thereby added 7 exploration licences and 2 exploration licence applications to its portfolio, such that the company's total ground holding in South Australia now amounts to 11,572 square km. Nine of the tenements were located within the Woomera Prohibited Area. The results of the regional, 34,541 station Gawler Craton (WPA) Gravity Survey completed by DMITRE early in 2014 provided WEX with convincing evidence that the probable >700 m thickness of cover present over most of its original three tenements, including over a small part of the north-eastern corner of the subject EL 5113, would make exploration of the crystalline basement there prohibitively expensive. Consequently, WEX decided to partially relinquish the northern two-thirds of EL 5113 that includes said ground portion. Diamond drilling done by CRA Exploration in 1988 in the south of what is now EL 5113 had intersected in hole DD88ME2 from below 74 m depth a sequence of altered volcanics and mafic/ultramafic rocks which were then interpreted as Wiltabbie Volcanics. WEX was of the opinion that CRAE's interpreted drill section illustrates that only the central portion of this potentially mineralised ultramafic intrusive complex had been tested. The major magnetic low source position appeared not to have been tested by this drillhole, and thus presented an immediate drilling target. Therefore WEX planned to extend the ground geophysical survey coverage acquired by CRAE on EL 1315 in 1986-1987 with the aim of re-modelling this target. During licence Year 3, in February 2015, WEX completed a technical review of the Mintabyng Project ground holdings, and relinquished ~50% of the initially granted ground, including the entirety of ELs 5114, 5115, 5116, 5289, 5290 and 5291, leaving nine ELs and two ELAs active. A sub-block comprising 470 square km or 87% of the subject EL 5113, covering its central to northern portion, was also partially relinquished at this time (see Env 12730). WEX also reviewed government ground gravity survey data from a nearby 500 m x 500 m grid which the Geological Survey of SA had released in 2014, and made plans to acquire a similar detailed ground gravity survey in the retained portion of EL 5113 to progress target generation. During licence Year 4, WEX re-modelled the ground magnetic and gravity data that CRA Exploration had used back in 1988 to define a target at Lake Labyrinth West that was drilled unsuccessfully by their historic hole DD88ME2 (see Env 6532). Here a 4000 nT reversely polarised magnetic anomaly coincides with a 2.8 mGal gravity anomaly. WEX's reprocessing of the magnetic data, using a Vector Residual Magnetic Intensity (VRMI) method to allow for the effect of remanent magnetism in the crystalline basement rocks that causes the reversed dipole effect, revealed a significantly different result to CRAE's older model when a new 3D magnetic and gravity data inversion model was generated. A coincident high density and high susceptibility 1.1 km x 500 m body was outlined, which the earlier drillhole appeared to have missed. The company reviewed available data from past surface geochemical sampling in the area, which had been sparse in nature primarily due to the extensive salt lake systems and Quaternary sand and clay cover there. Nevertheless, a few samples had yielded copper and gold values which WEX believed were worthy of follow-up. During the year WEX also became aware that Lake Labyrinth has been identified by Geoscience Australia as having lithium-boron-potassium assay values recorded from samples of lacustrine sediment pore space - filling brine that are significantly higher than those of seawater, e.g. the Li concentration is around 30 times what exists in sea water. Consequently WEX decided to investigate the brine potential further, and began researching aspects of the geological setting which could favour the formation of brines that are enriched in valuable elements. During licence Years 5 through 8, no field work was done. In 2019 a Native Title Mining Agreement was executed with the Antakirinja Matu-Yankunytjatjara Aboriginal Corp. (AMYAC), and a Resources Exploration Permit for the “Infrequent Defence Use” exclusion zone (Green Zone) of the Woomera Prohibited Area was granted to WEX by the Commonwealth Government's Department of Defence. Subsequently WEX informed AMYAC of its intent to drill three exploratory diamond holes on the subject EL 6134 to search for komatiite hosted nickel sulphides and gold, and an aboriginal heritage protection clearance survey was paid for and conducted at the proposed drill sites, but no grant of access to proceed was forthcoming from AMYAC. A compromise solution was sought to try to change AMYAC's position, but the situation did not change. In November 2020, WEX partially relinquished 172 square km or ~64.7 % of the former area of EL 6134, retaining a portion of ground on its western side.