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13/08/22

01:58

Post #: 63090430
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Originally posted by ToastBox: ↑

@salpetie may be one to discuss the two smaller deposits. (Not sure if he is still around here, I do miss his excellent sentinel posts)

I recall in one of his posts in the El Fuego Area Exploration thread, he may have described them as shallower veination? type mineraelology, lilkely to be shallow, smaller scale high grade deposits... However there also are memories of a post discussing with someone, maybe MT88 about whether there could be further High Grade "cores" under San Antonio.

I suspect the reason they weren't drilled out earlier was because they werent (believed to be / likely to be) high enough tonnage. the team are/were looking for (in my understanding) large tonnage porphory deposits (Tier 1 type stuff)

Now it seems the high grade, near surface stuff is going to be important to boost the PFS and front load the mineplan to reduce payback periods etc.

I personally see any further extensions to tonnage/resource size at these locations as bonuses, and aren't necessarily expecting it as such

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Originally posted by tinhat: ↑

On top of what you say about front-loading the mine schedule to reduce the payback period and boost the NPV, over the longer term, being able to stockpile different grades of ore can also greatly assist in maintaining profitability throughout the copper price cycle for longer term, multi-decade operations. When the copper price is high you can use more lower grade ore and retain profitability on lower margins and when the copper price is depressed you can use more of the higher grade ore to sustain you through the lean times when its not possible to make money on just the lower grade stuff.

I have a question for the boffins. If ore is near surface is it right to generally assume that it is oxide? Can oxide be sold as concentrate or does it have to through SX-EW? Can oxide and sulphide ore be blended and processed or blended once made into concentrate?

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HCH Price at posting: 90.0¢ Sentiment: Buy Disclosure: Held
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