China's smelters and international miners have not agreed to terms for next year's treatment and refining charges, likely prolonging negotiations into 2018.
Following sharp rise in copper prices this year, ZCCM Investments Holdings wants to increase its stakes Zambia’s mines and expects higher dividend payments.
The Ecuador-focused miner said it has discovered "promising" new copper prospects at the Porvenir and Timbara projects, with rock chip samples graded up to 4.27% copper.
Brazil’s lower house of Congress removed from the agenda the discussion of a transitory presidential decree, which modified the country’s current mining law.