Heron Resources Limited reported the results of an IP geophysical survey at its wholly-owned Woodlawn Zinc-Copper Project, located 250 km south-west of Sydney, New South Wales, Australia. The program consisted of a modern IP survey within Heron's granted mining lease and covers an area of 4.0 km x 2.4 km directly north of the Woodlawn Mine. IP geophysical surveys were successful in identifying the original Woodlawn deposit in the early 1970s; however, the early surveys could penetrate only to depths of approximately 150m whereas the modern high powered surveys can penetrate considerably deeper to approximately 700m. An IP survey was recently completed directly north of Woodlawn in an area which contains the Woodlawn volcanogenic massive sulphide (VMS) host rocks, in an effort to identify anomalies at-depth that could be related to potential new Woodlawn style deposits. Survey lines were spaced at 400m with some infill in the south to 200m. The data was collected on 2D lines and then modelled in 3D to provide the slices. The survey recorded chargeability, conductivity and magneto telluric data. Electrical noise (interference) levels were low, providing the survey with good depth of penetration and signal resolution. The northern-most line covered the Cowley Hills VMS deposit (35kt of massive sulphides mined in the 1990s) and showed a relatively weak response, which provides a guide for the other responses detected in the current survey. The two main IP anomalies at the Murphy's and Bucklands North prospects have been selected for immediate drill follow-up. The anomalies at Bucklands (directly north-west of the Woodlawn pit) and the Western prospect also warrant follow-up drilling but have been prioritised below the two initial anomalies. The anomaly at the Murphy's prospect is a strong coincident chargeability and conductivity anomaly extending down 600-800 m below the surface and covering a strike extent of some 600 m. Murphy's has a strong surface geochemical anomaly and shallow drilling here in the 1980s and 1990s intersected broad zones of relatively weak zinc, lead and copper mineralisation within a mixed sequence of hydrothermally altered Woodlawn Volcanics and De Drack Formation volcaniclastic and sedimentary package. The IP results indicate the mineralisation may continue and potentially get stronger at depth. A proposed 780 m deep drill hole is being planned to provide an initial test of this anomaly. At the Bucklands North prospect a large, strong chargeability anomaly has been identified over some 600 m of strike. This chargeability anomaly is deeper and larger than the Murphy's target and may reflect a broad zone of disseminated sulphides surrounding a sulphide lens at depth. Weak base-metal sulphide mineralisation was returned from shallow drilling undertaken in the 1990s and indicates the possibility of a distal alteration halo surrounding a VMS system. The absence of a coincident conductivity anomaly in this area does not diminish the targets prospectivity: Woodlawn-style ore bodies produce relatively narrow conductivity anomalies compared to chargeability because the conductivity responds to small, narrow massive sulphide `core' only, while the chargeability maps the volumetrically much larger disseminated sulphide halo. Therefore, it can be expected that a deep orebody may only be visible in the chargeability data and not in the conductivity data. A proposed 750 m deep drill hole has been planned to provide an initial test of this anomaly.