Bolivia’s government has guaranteed a US$84 million investment to upgrade the country’s largest tin mine, state news agency ABI reported yesterday. Management of Empresa Minera Huanuni, part of the state mining company Comibol, are required to present final details of the project for congressional approval in the next 30 days.
The Huanuni mine produced 7,669 tonnes of tin-in-concentrate last year and Comibol is targeting an increase in capacity to 13,500 tpy from 2010. The project will involve increased mechanisation of the lower levels of the mine and a trebling of mill capacity to 3,000 tpd.

