Anglo American plc, London, England

Barrick Gold Corporation, Toronto, Canada

BHP Billiton Innovation Pty Limited, Melbourne, Australia

Corporacion Naciónal Del Cobre De Chile (“Codelco”), Santiago, Chile

Compania Minera Dona Ines de Collahuasi SCM, Iquique, Chile

DeBeers Group Services, Johannesburg, South Africa

Newcrest Mining Limited, Melbourne, Australia

Newmont Australia Limited, Perth, Australia

Xstrata Queensland Limited, Brisbane, Australia

Debswana Diamond Co., Gaborone, Botswana

Rio Tinto, Australia

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