Robert, F., Barrick Gold Corporation, Toronto, ON, Canada; Brommecker, R., Barrick Gold Corporation, Toronto, ON, Canada; Bourne, B.T., Barrick Gold of Australia Ltd., Perth, WA, Australia; Dobak, P.J., Barrick Gold Exploration Inc., Elko, NV, USA; McEwan, C. , Compania Minera Barrick Chile Ltda., Providencia, Santiago, Chile; Rowe, R.R., Barrick Gold of Australia Ltd., Perth, WA, Australia; Zhou, X., Barrick Gold Corporation, Toronto, ON, Canada
