Ann: Investor Presentation, page-111

OK best off you stop before you make a real ass out of yourself. Most other projects would have to bring in and construct for a huge ball and SAG mill. Like say the lithium miners with huge plants so yes this is a lot that could go wrong in construction. A lot of CYM’s retrofit is larger cathodes / anodes / rectiformers etc, in the EW which they have previously fitted in the sister plant in WETAR. Then moving the existing leach pads to newly constructed leach pads. Electricity and accommodation is already onsite.

Moving to newly constructed leach pads the remnant material needs to be re-crushed, agglomerated and restacked via an overland conveyor.

Optimisation testwork, has already been carried out & will enable a scalable solution to be designed for the agglomeration, curing, stacking and irrigation of the historic heap leach material based on this work. Initial results of the optimisation columns will result in reduced reagents consumptions from those already anticipated in the study.

There will be two leach pad circuits on site producing copper in solution to the plant namely, the rehandling, retreatment and stacking of the existing historic leach pads and the mining, crushing, agglomeration and stacking of newly mined oxide material from the expanded historical open pit. There is plenty of time to get the new oxide pads correct as there is already sulphate solution available that has a grade of +10 gpl copper when compared to a usual solvent extraction (SX) feed grade of 3 to 4 gpl copper. This significant solution inventory of over 500 tonnes of copper is available for project commissioning. Barry has expanded on this in the latest video saying the solution ponds are full of solidified copper sulphate once the dirt layer on top was scraped off.

There appears to be 4 major sized solution ponds which I calculated off the Nifty mine diagram,

1 at approx. 115m x 100m

1 at approx. 110m x 78m

1 at approx. 95m x 57m

1 at approx. 95m x 63m

Let's say they average at 3m depth or about ½ the depth of the 6m high leach pads.

That equates to a volume of around 94,440m³ of copper sulphate. What’s that worth and how much extra production will come from that?

Barry indicated that there is already an extra 2 years worth of oxide production in addition to what the restart study identified. So how do we calculate the profitability of 2 extra oxide years of production when all the debt has been paid off and the oxide/sulphide leach pads are already waiting to go. What about the other 20+ years of sulphide production which is leachable and has already been leached by Barry and team at Finders in WETAR. Is that all free of debt as well? Not quite as you require aeration piping /compressors etc, but not a huge difference from what is already on site. What about production costs? AISC would be very minimal with only running costs coming into the equation. Yep that is the silent elephant in the room here. Just need to wait for Barry to complete the updated study including the sulphides which he was alluding to in the recent interview and watch the SP go ballistic. Baz is holding his cards close to his chest IMO.

Restart Study in March 2022 which is what all the figures are based on.

May 2022 there was a MRE upgrade with 28.4% extra material added but not included in the restart study.

Then there was extensional drilling in the East/West with more material added after the MRE update.

Then in October 2022 Cyprium released it has now increased the mineral resource endowment at Nifty Copper Project by over 40% and the west and east of the mineralisation remains open.

The updated mineral resource estimates will be included in Phase 1 of the Nifty Restart Project optimisation, which will add further copper tonnes, mine life and cashflow.
If you haven't paid attention the chalcocite is more time-consuming/difficult to leach and there is not a lot of it at Nifty although it contains about 80% Cu by weight.