The Grasberg mine in Indonesia is the world's largest and richest gold mine, producing 48 tonnes of gold a year, and has reserves worth an estimated $40 billion.

He said this would enable mines to modernise and improve their ability ... It is then transferred to the second factory where it is dried inside enormous rotating tubes, before being passed ...

The teenage boy and his friends had poked inside a horizontal mine shaft roughly 180 feet into the side of a mountain last week, officials said. They rappelled approximately 40 to 50 feet down the ...

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