rxm as renewed takeover or merger opportunity, page-5

asf, So far as I can tell it certainly is lower than Australian average but similar to other mines everywhere else in the world. Low grade is apparently OK so long as processing cost is also low - i.e. processing scale will be BIG to get economies and large volumes of copper per unit time.

See here for comparison of Cu grade over time by country comparing Canada, US, Australia

http://www.theoildrum.com/files/JL_Cu_09_OreGrades.jpg