Exclusive: US investor Cameron offers $5 billion for Kazakh mining giant ERG, letter shows

MOSCOW (Reuters) -U.S. businessman James Cameron has offered to buy mining giant Eurasian Resources Group for $5 billion, a letter he sent to its board showed, as the company prepares to participate in a major expansion of Kazakhstan's rare earths output. ERG, a Luxembourg-based producer of copper, cobalt, aluminium, and iron ore that is 40%-owned by the Kazakh government, said last year it had formed a task force to explore deposits of rare earth and rare metals in Kazakhstan. Those minerals have gained particular attention in recent months as U.S. President Donald Trump's administration seeks alternatives to China to supply its domestic industry as a trade war between the countries escalates.