TARGET: The initial targets sought by INCO were nickel and base metal sulphides possibly formed in ultramafic igneous rocks of the Mid-Proterozoic Giles Complex. In the later stages of investigation, secondary nickel occurrences in lateritic ochres were evaluated. EXPLORATION: Extensive exploration of contiguous areas in SA and WA has included geological mapping, stream sediment sampling and traverse-based soil geochemical sampling, plus the acquisition of resistivity profiles, ground magnetometer traverses, ground EM surveys and airborne EM surveys, leading to the ground follow-up of 77 airborne EM anomalies and exploratory drilling on 5 of them (totalling 69 holes for an aggregate depth penetration of 9692 feet). This drilling comprised 20 wagon drillholes, 24 percussion holes and 25 diamond drillholes. RESULTS: No significant sulphides were found. Small deposits of nickel-enriched serpentinised laterite were defined, the largest of which is at Claude Hills. Here the Indicated Mineral Resource of 1 million tons @ 1.5% Ni is not considered to be economic.