Investigator Resources Limited (IVR) is continuing to explore its contiguous tenement package in the Southern Gawler Ranges for economic precious and base metals, following its discovery of the Paris silver deposit in 2011. A prospective region called the Uno province has been defined associated with the Uno Fault and its splays, for which IVR has built a mineral systems geological model to explain the evidence it has so far obtained from work done within the 10 km x 20 km area positioned along the NW – SE structural axis which passes through the key Argos, Paris, Nankivel, Peterlumbo Hill and Hector prospects. The Nankivel Intrusive Complex (NIC) in the past had only received limited drill attention which was focussed primarily at Nankivel Hill (historical work conducted by MIM and Aberfoyle), while a limited investigation by IVR in 2014 had focussed on a prominent magnetic target on the northern end of the complex (Helen prospect), thereby successfully identifying skarn style Au, Ag, Cu and Fe (magnetite) mineralisation. A small number of selected holes were also drilled to ascertain the boundary geology on the western side of the complex, and these gave indications of a potentially multiply intruded/multiply alteration-overprinted history. Based on the past drilling data and on its magnetic modelling for the NIC, IVR identified a complex variety of magnetic targets scattered throughout the core of the complex that are thought to have potential for possible breccia or porphyry style mineralisation. During 2015/2016, additional alteration mapping of exposed basement rocks in the Nankivel Hill region was undertaken in collaboration with Geological Survey of SA staff, which included Hylogger and PIMA analyses of selected grab samples in an effort to enhance and build upon legacy data which supports the presence there of high sulphidation epithermal alteration i.e. from identification of alunite/dickite/pyrophyllite (PIMA, MIM Ltd) and related indicator minerals (tourmaline, topaz and fluorite identified in the field by by GSSA and by IVR in thin section petrography). These additional results renewed focus on the Nankivel Hill area as a prospective location to test the company's long-held theory that porphyry style mineralisation could be present in the region. As a continuation of deep diamond drilling exploration of the NIC which was started by PACE Project DPY8-31 in 2015 (see Env 12976), a second proposal for PACE Year 9 funding of deep drilling within the Peterlumbo region was submitted by IVR to DSD in April 2016, which was later approved as project DPY9-24, with a signed agreement made on 21/11/2016. The proposed work comprised 8 drillholes that were a combination of reverse circulation and diamond core drilling that would total an estimated 2160 m. All of the new holes were located in places where no previous drilling had been done, with the exception of some limited historical aircore traverse drilling to 100-500 ppm and of gold above detection limits, plus the sulphide enrichment, gives proof that the PACE Year 9 drilling has tested a proximal portion of a Cu-Au mineralising system. The GSSA performed Ar/Ar dating of an alunite sample taken from outcrop at Nankivel Hill which yielded an interpreted age for the siliceous breccia of 1586 +/- 8 Ma, putting it within the Hiltaba Event / Olympic Dam timeframe. A more recently completed LA-ICPMS U/Pb date for a core sample of the granodiorite from the bottom of IVR's PPDH147 has been informally reported to the company to be closer to the Saint Peter Suite age of approximately 1619 +/- 8 Ma ( Reid, pers. comm.) – this would suggest that a long duration (30 Ma) intrusive event took place to form the NIC, wherein multiple phases of intrusion occurred, and thus opens up the potential for existence of multiple phases of porphyry style mineralisation. Such a long-lived event could have also enabled up to 1000 m of progressive erosion into the earlier intrusive/mineralised rock emplacements, hence offering a range of target depths beneath the current surface to be tested.