Ann: New High-Grade Satellite Project Added to Productora, page-7

Good portion of the required future new supply of copper is needed to come from mega low grade deposits in difficult places. These all carry multi B dollar capex price tags to build infrastructure as well as the mine itself. Further some of these will not produce clean concentrates which add further to costs. My opinion that 300-350c/lb is not enough to gate these old zombies. Reckon plus 4 is highly likely, just timing. Add to that the electric everything boom pushing demand rates.