Molycorp chief executive resigns

Tue Dec 11, 2012 4:19pm EST
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Dec 11 (Reuters) - Rare earth producer Molycorp Inc said Chief Executive Mark Smith has resigned, a month after the company revealed that it was under investigation by U.S. securities regulators over the accuracy of its disclosures, among other things.

The company named Constantine Karayannopoulos, vice-chairman of Molycorp's board, as the interim president and chief executive.