RE:RE:RE:Grades at producing Oyu Tolgoi Mine Overall grade of Pebble is ~0.57 - 0.7% (depending on which section of the deposit) expressed as COPPER EQUIVALENT which is ALL metals combined expressed as a percent. *None of this means anything until a Feasibility Study releases proven/probable RESERVES.
Some larger older operating mines can economically mine similar grade/percent because most, if not all, of their CAPEX is paid.
Pebble is low grade, large tonnage, but all inclusive CAPEX per the existing agency mine plan has yet to demonstrated to be a RESERVE.
https://www.lawinsider.com/dictionary/copper-equivalent#:~:text=Copper%20Equivalent%20means%20the%20percentage,Sample%201
Read. Learn. Apply. The cheddar is continuing to mold until nothing is left.