I don't mean to be a nervous pervis but I did manage to track down some figures:
19/9/2005 Official Opening Intec Hellyer Metals Demonstration Plant.
"...aims to profitable recover five base and precious metals (zinc,lead,silver,gold and copper). With an in-situ value of A$1.8b from the tailings dam at Hellyer mine site...."
Copper 0.16% 17,400t.
Average extraction 93.5%
Revenue by commodity:
Copper 6%
Zinc 58%
Lead 17%
This was the release to the ASX all those years ago.
Copper 4%? Not according to these figures and a very small part of revenue anyway.
The full break up on the other metals is there for those who are interested. Gold has proved to be difficult to extract as the recovery rate in this report was around 30%
I understand that this has improved over the years?
robot trades, page-107
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