copper confusion, page-182

Wow - didn't that set them off!!! Thanks to the others who are prepared to listen to questions.

James

I am happy to concede that the termonoligy7 used may be considered confusing. I forgot I was not talking to Geo's

Ore types, that is the basis for processing and recovery are pretty standard. Ore within certain oxidation states are termed oxide to make it easier for differentiation for metallurgical recoveries in the plant.

"Oxide ore"(*that is used in releases)for this deposit is solely referred to as the copper carbonates, malachite and azurite.

I am strongly suggesting that "oxide ore" will include a significant portion of the native copper ore from a metallurgical position, no pyrite.

Have a look at the pics of native copper core - do you see pyrite!!

Sorry James, I apologise for having to dumb it dowm!!

ROH - I appreciate your long response but do not see too many answers to the questions.

You say: "Metallurgical testing has been exhaustive and has seen over $4 million dollars expended to get the optimal results."

I say they have tested very well, but........

You say: "Testwork has focused on liberation of large-nugget native copper prior to milling and the production of a high/grade copper/gold concentrate and a saleable cobalt product post the milling circuit utilising gravity separation and flotation processes. Oxidised ores and native CU is in final stages of assessment prior to fine tuning, with only fine tuning required for the supergene and primary ore circuits, still in progress. Mineral liberation Analysis of the primary ore flotation products shows a high level of mineral liberation from the ore at 125um grind size "

In 2009 and nothing since...........

And yet!! - 'It goes on to state "Examination of hydrometallurgical treatment of the oxidised zones using Leach/Solvent/Extraction/Electrowin and similar techniques for copper and cobalt recovery has been progressed at the Company's on site laboratory. Under certain process conditions recoveries of CU of greater than 95% and Co up to 90 % have been achieved. Current investigations are testing the overall circuit options for leaching, extraction and metal recovery in "closed shop"simulation testing."

in 2009 and nothing since that is reflected in the proposed(sorry, being built) plant. I cannot start to reason with someone who will believe the Met samples are the telling the true story for the different ore types.


You say:
The 2012 Annual Report under Key Input Assumptions to Preliminary Financial Model states Äverage Metal Recoveries
Copper 95 %
Cobalt 90%
Gold 75%
Magnetite 55%

OK - I challenge the recoveries in the differnt ore types including (Not - oxidation) native copper zone - which are significant in the CuEq grade.

If you need further explanation on ore types (which I am more than happy with the general description) and oxidation (SEE JORC REPORT!!!!!!!!!!!) and you don't understand - let me know.

You know roh and James - I enjoy an informed discussion, pity you don't seem to.

If you really need it to be explained better!!!!

Tuskie.