Ann: High Grade Copper Results at Yandera , page-6

Damn good!Yandera no longer looks like a low grade copper mine now, to me at least.

The Bingham Canyon Mine, also known as the Kennecott Copper Mine,now owned by Rio Tinto in US Utah, was the largest open pit mining and the most profitable low grade copper mine in the world.

Unbelievable, they stopped open pit mining until the ore grade reaches 0.14% Cu, 0.007% Mo, 0.10g/T Au and 1.1g/T Ag.

Yandera Copper, was first discovered by Kennecott Copper and BHP in 1970s.