 The Maggie Hays deposit was developed in 1996 by LionOre Australia.It was discovered by prospecting in the 1970s by Anaconda Co. and Union Miniere, who had first located a nickel geochemical anomaly and drilled the disseminated halo, but missed the lucrative high-grade massive sulfide mineralisation by as little as three metres.The recognition of the Maggie Hays orebody by LionOre geologists in the late 1990s was based upon electromagnetic geophysical surveys and deep diamond drilling of conductive anomalies.