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Orvana Announces Preliminary Economic Assessment for Copperwood Project, Upper Peninsula, Michigan, USA
Sep. 13, 2010 10:49AM PST
Base Metals Investing Orvana Minerals Corp. (TSE:ORV) announced today the highlights of their 43-101-compliant Preliminary Economic Assessment of the Copperwood copper project, Upper Peninsula, Michigan, USA.
Orvana Minerals Corp. (TSX:ORV) announced today the highlights of their 43-101-compliant Preliminary Economic Assessment of the Copperwood copper project, Upper Peninsula, Michigan, USA.
The press release is quoted as saying:
The study contemplates a 10-year underground operation that applies room-and-pillar mining. A trade-off study determined that the most economic mining method is the use of a continuous miner, which is commonly used in coal, salt, trona, and potash underground mines. Processing would be by froth flotation.
Click here to access the entire press release
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