Baker McKenzie has advised U.S. mining investor Orion Resources and British investor Audley Capital Advisors on the sale of a 30% stake in a copper mine in Chile’s Atacama region.

Mitsubishi Materials Corp. of Japan bought the stake in the Mantoverde copper mine owned by Mantos Copper Holding SpA for a $263 million equity subscription and a $20 million cash payment upon fulfillment of certain milestones.