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Archer closes in on pit design for Campoona graphite resource

28/04/2014 by

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Archer Exploration expects to have completed the pit design for their South Australian graphite project at Campoona by the end of May.

During February and March three holes were drilled to 297 metres into the eastern and western pit walls to take rock quality data that will support a detailed pit design, with one of the holes sampled for analyses.

“We’ve done this latest run of drilling to get the geotech holes done, so we can tell the angles of the highwall, to get the overall pit shape and pit shell,” Archer Exploration chairman Greg English said.

Sampling for the first five years of mine life was taken from four drill holes with 229mm auger at 30 metres deep, which provided 4.5 tonnes of sample, representative of run-of-mine feedstock, for scale-up and pilot scale test work.

Drilling during the March program has also sufficiently infilled the Central Campoona footprint to allow a full resource estimate update by June this year.

This will build on the deposit’s maiden JORC (Joint Ore Reserves Committee) inferred resource estimate of 520,000 tonnes at 11.6 per cent total carbon at a nominal cut-off grade of 5 per cent total carbon, announced only in February this year.

Central Campoona is one of the Campoona project’s five zones of high grade, highly graphitic schist located along the trend of the Campoona Shear, which is located 15 kilometres north of Cleve, roughly halfway between Whyalla and Port Lincoln in South Australia.

This article has been extracted from http://www.ferret.com.au,  please click on this link to read the article in full http://www.ferret.com.au/articles/news/archer-closes-in-on-pit-design-for-campoona-graphite-resource-n2513846

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