COPPER INDUSTRY – – SURVEY OF 14 PUBLIC MINERS SHOWS FIRST-HALF COST ABOUT UNCHANGED AND FIRST-HALF MINE OUTPUT UP 1.8% 08/3/2015

COPPER INDUSTRY – – SURVEY OF 14 PUBLIC MINERS SHOWS FIRST-HALF COST ABOUT UNCHANGED AND FIRST-HALF MINE OUTPUT UP 1.8% 08/3/2015