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JAKARTA, Jan 18 (Reuters) - Maroef Sjamsuddin has resigned as chief executive of Freeport Indonesia, the local unit of U.S. mining giant Freeport McMoRan Inc, a spokesman said on Monday.
"He resigned, that's all I can say," spokesman Riza Pratama said, declining to give further details.
Freeport, which operates one of the world's largest copper and gold mines in Indonesia's far-eastern Papua region, is negotiating with the government for an extension of its contract, which is due to expire in 2021. (Reporting by Agustinus Beo Da Costa; writing by Nicholas Owen; editing by David Clarke)