Anaconda Chile S.A. --- Barrick Gold Corporation---Battle Mountain Canada---Billiton Chile S.A. ---CODELCO---IAMGOLD ---Inco Chile S.A.---Inversiones North Chile--- MIM Exploraciones--- Minera Andes

Minera Aquest Chile---Minera BHP Chile Inc.----Minera Cambior Peru S.A.---Minera Cominco Chile---Minera Cyprus Chile Ltda.---Minera Gibraltar---Minera Homestake Chile---Minera INMET Chile S.A.

Minera Mantos Blancos---Minera Meridian Ltda.----Minera Mount Isa Chile----Minera Newcrest Chile S.A.---Minera Outokumpu Chile----Minera Phelps Dodge Chile---Pegasus Gold International

PepinNini Minerals Limited---Petrominerales Colombia---Phelps Dodge Corporation---Placer Dome Canada Ltd.----Rio Algom Exploration---RTZ Mining and Exploration---SERNAGEOMIN

Teck Exploration Ltd.---Universität Hamburg---WMC Chile S.A.

Universität Hamburg WMC Chile S.A.

RTZ Mining and Exploration SERNAGEOMIN Teck Exploration Ltd.