Sierra Gorda has revealed 140,000 tonnes per year of Copper
Vancouver based Quadra Mining has released a scoping study on its Sierra Gorda project in Chile’s region II outlining a 25 year life in which it would produce on average 306 Mlb per year copper, 16 Mlb per year molybdenum and 36,000 oz per year gold for a startup CAPEX of USD 1.66 billion and [...]