I agree that it would have been useful for the press release to list the amount in the tailings pile, however from the MDA of the last 10-Q (Page 36).
"Copper grade ranged from a minimum of 0.16% Cu to a maximum of 0.43% Cu with the average being 0.36% Cu. The report also estimated the tailings to contain approximately 1.2 million tons of material. "
The press release showed up on various financial websites (If memory serves Google Finance was one of them)
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