During the current period, 25 holes/1042 feet of diamond drilling to check on discrepancies with previous downhole percussion drillhole ore sample assays reported from the Lagoon area, plus 31 holes/2780 feet of exploratory/appraisal percussion...

Ongoing evaluation work undertaken by Austminex at the Mount Gunson copper deposit has included geological mapping, rock rippability testing by bulldozer, the conduct of IP surveys, a further campaign of infill and exploratory drilling (726 holes...

Two distinct types of sulphide deposits have been recognized. One is syngenetic with the host quartzite, and may thus also have formed elsewhere at various positions within it. The other type of occurrence was deposited below the water table from...

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Copper extraction in percolation leaching was relatively slow because of the low porosity of the large rocks in the as-ripped ore. To obtain reasonable extraction rates, size reduction will be required. Agitation leaching of ground ore gave copper...

Work included froth flotation, leaching, solvent extraction and stripping tests. Estimates of capital costs and operating costs were made for oxide and sulphide flotation plants and a more complex plant comprising acid leaching, solvent purification...

Investigates the likelihood of mineral concentrates becoming oxidized and liberating toxic sulphur dioxide gas during their transport to Japan. The sample examined is quite stable, but is not representative of the concentrate likely to be produced...

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