Erdenes COO Graeme Hancock

Erdenes COO Graeme Hancock

Jerome Favre/Bloomberg

Graeme Hancock, chief operating officer of Erdenes Tavan Tolgoi LLC, is seen in this Oct. 30, 2012 photo. Hancock was the second-highest executive at Erdenes TT and his role included preparing the company to list in Hong Kong, London and on a domestic bourse.