Bimbowrie EL 3278 is located within the Palaeoproterozoic Olary Domain of the Curnamona Province, South Australia. The property is prospective for a variety of mineralisation styles including granite batholith primary (hard-rock) uranium, Broken Hill style stratiform Pb-Zn-Ag, Mt Isa - Century style stratiform Zn-Pb, Cloncurry style stratabound Cu-Au, and iron oxide - associated copper-gold (IOCG) similar to that of Olympic Dam or Prominent Hill. PepinNini commenced its exploration of the tenement area with an extensive data and literature review that identified eleven base metal prospects having scope for further investigations. Several uranium prospects in the Crocker Well Uranium Field were also identified from detailed regional airborne radiometric data. A potentially major iron oxide copper-gold target was identified in basement at the Willow prospect, based primarily on a 6 mGal discrete regional gravity anomaly. Cover metasediments at the prospect also exhibited complex folded magnetic stratigraphy, interpreted demagnetized zones and historically anomalous surface sample locations. PepinNini applied for and was granted collaborative funding for drilling at this prospect under the South Australia Government's PACE initiative. The drilling was undertaken during August-September 2005, when one diamond core hole and six RC holes were completed for a combined total of 785.5 m. The 70 degree angled, deep diamond hole was intended to be a conclusive test of the local stratigraphy at the peak of the positive gravity anomaly. Before the PACE programme started, PepinNini conducted a 5 km x 5 km, 498 station detailed gravity survey across the Willow IOCG prospect in June 2005 which confirmed and improved the spatial resolution of the 1500 m diameter Willow gravity target. The subsequent PACE drilling, which started with the diamond hole DD05WIL001 put down to TD 246.5 m, identified the source of this broad gravity feature as a large and previously unrecognised amphibolite intrusion, probably belonging to the Lady Louise Suite of mafic intrusions. The dense amphibolite body persisted from 17 m depth to the end of the NQ cored hole, showing minor variations of foliation, internal structural disruption, grainsize, magnetite content and carbonate-epidote alteration. Fine disseminated pyrite and pyrrhotite are present, but no significant mineralisation or anomalous geochemistry is apparent anywhere within the thick mafic mass. Although the prospect was thereby substantially downgraded as an IOCG opportunity, some noteworthy weakly elevated copper results were returned from drilling of pelitic metasediments near the contact with the amphibolite intrusion. Reconnaissance rock chip and soil sampling were also undertaken across parts of the Willow IOCG target, but no anomalous assay results were returned. No evidence to support an historically reported highly anomalous surface sample, North Ltd's ZA387 (5.65% Cu), was found. A small quantity of reconnaissance rock chip samples taken from the Crocker Well Uranium Field returned anomalous uranium assay results that will require further follow-up.