TSX-listed Orvana Minerals has announced the suspension of mining operations at Los Tojas, Bolivia, but it the company is studying an oxide stockpile project at Don Mario, which could provide three years of production.
The miner explained on Friday that Los Tojas was uneconomic on an unitary cost-per-ounce basis, owing higher-than-expected ore-grade operational mining dilution, with more narrow, erratic and discontinued mineralised structures.