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I can see your dreaming 🤣
Just not going to happen.
Shaun mentioned in London last year that trucking that much ore to Telfer is difficult.
I don’t know if you remember I was questioning the feasibility of trucking the 3m tons but they’re saying it’s doable, going up to higher figures per year is not doable and needs conveying especially if it ever gets to 20m ton pa in a bulk mine.
30mton pa at Winu is not economical to get to Telfer perhaps didn’t know of this projected figure.
If you look through Antipa news it states somewhere that their gold at Calibre could pay for the Winu ore to be processed either there or at Winu
Hi Malva
There is a lot at Hemi to consider
The gold is the only economic mineral it has to pay for the whole operation.
The only way 500koz could be achieved is having all 6 pits open practically at the same time as it gets lower the amount of tonnage coming out will get lower.
Their underground mines will be stoped so you can’t compare Havieron capex with Hemi as Havieron is very compact , Hemi underground looks to be in narrow thrust faults and veins.
Hemi irregular shapes will cause high dilution rates they’ve never disclosed any.
Havieron stoping will preserve the cover surface reinstatement will be minimal, Hemi will be quite extensive especially with a huge tailings pond to be constructed.
Hemi needs to extract 3x Havieron ore for the same ounces equivalent.
There doesn’t look like there will be dilution if Ggp by Telfer and the 70% according to what Shaun was saying.
There’s a lot of talk about more Ore to be found at Telfer so it’s just not the case of buying a plant on its own.
Don’t get me wrong I think Hemi is a good asset but it nowhere comes close to the Havieron orebody
Hi Everyonesawinner
At it again I see best you read the Winu MRE
https://www.riotinto.com/-/media/Content/Documents/Invest/Reserves-and-resources/2021/RT-Winu-reserves-resources-2021.pdf?rev=f5f9153801904622b652035860d015b4
30m tons per year
3 bed truck 180 tons
That’s 470 truck loads per day.
Yeah right that will happen NOT.
I see AIM99.5 is having another go.
The trouble with you is you don’t understand the difference between “crap” as you suggest and a superb mining ore body.
You are very ignorant of the fact how good Havieron is and also very naive at what is at Hemi.
The Hemi deposit is a good asset but it’s nowhere as good as Havieron.
Both have been going since 2019.
Havieron is a vertical orebody.
Hemi has 6.
Havieron’s SE crescent grades are around 3.6
Hemi’s grades are 1 to 1.5 g/t
Havieron mine life 14-15 years
Hemi 10 years.
Havieron is forecast 370,000oz pa at 3mt pa
Hemi 550,000oz for 10mt pa
10mt at Havieron would produce 1moz pa due to the higher grades
Havieron will use the Telfer plant.
Hemi will need a brand new one.
Telfer has already got gas and electricity connected.
Hemi hasn’t procured those contracts yet.
De Grey haven’t achieved debt funding yet and just had a massive dilution to fund the plant.
Ggp has a debt facility in place.
De Grey is 19.9% owned by Gold Road.
There is NO copper at Hemi.
When you start having a pop at people get your own house in order first or you are likely to show how naive you are.
Ah you’ve already done that
There is a difference between pressurisation and water flow.
Pressure would have been dispersed in the first few bore holes and there are 6 of them.
What the petrologists at Havieron are doing is monitoring the water flows into these bore holes they would like it reduced to 20 litres per second but it’s not quite there yet according to Shaun.
If you have 1 bore hole the water will come in to the hole from 360 degrees, if you have 2 bore holes the area between the holes will dry up first leaving water coming in from an oval shape around them.
With 6 holes, the area in the centre will dry up first. Over time in a confined aquifer the flow pressures will diminish to a dribble.
This a SIPA resources ASX announcement from Monday
https://wcsecure.weblink.com.au/pdf/SRI/02780550.pdf
This is Rio pulling out of their jv
This is from January showing the drilling logs of Rim and Jumper on 2 licences abutting Winu.
https://wcsecure.weblink.com.au/pdf/SRI/02760560.pdf
There is absolutely no gold and looking at the copper of about 1ppm you have to say no copper. Ground levels of copper are around 40-50ppm economic levels 8,000-10,000ppm.
Winu is sat on a NW trend which goes off to the SE and the back round to Calibre adjoining another NW trend and back up through Ggp’s Citadel Hill adjoining SIPA on the other side.
The question whether Rio hold on to Winu has been doing the rumour mills for 3 or 4 years now. I know they were having issues gaining heritage permissions to continue exploration activities 12 months ago, I’ve not heard about that since
Hi Redtrader
Until the Decline gets going again we are not going to know what kind of advancement they are going to achieve.
Shaun at the Town Hall talked very positively about the type of rock in the aquifer and then went on to describe how much better the rock is below the cover for mining.
Going back to the 4 layers above the lower aquifer the best average rate I saw was 5.5m per day, so in a better rock they should accomplish 6m per shift easily.
6m is the measure of how far the jumbo can drill in and the explosives can break up the rock. The lower aquifer rock will be easier to drill and break up quicker than the softer rock.
There is the question of stability as the advancement is governed by the mathematics, ie it can’t advance further than the height of the Decline 6.5m.
During going through the lower aquifer the ventilation is not sufficient yet to support 2 shifts.
As the ventilation improves through the basement rocks with the introduction of an Evasee fan at surface more shifts can be introduced plus additional mining fronts will become available.
There’s 2 mining faces immediately available in the lower aquifer so one team can be more efficient and may achieve greater than 6m straight away.
Byrnecut teams are currently working on the Telfer underground this will be running down from H2/24, these will start to become available for Havieron Development Ore and mining fronts.
The main team will keep driving the Decline lower.
Zoros timeline is about right but a bit optimistic on the Development Ore but expect advancement rates to keep increasing as more ventilation becomes available and more gangs move over from Telfer.
If the Production phase doesn’t start at the time the Decline recommences , my one concern is another hold point but Shaun didn’t seem to think it was a problem from earlier comms.
The Lower aquifer cannot be compared with the 2 upper aquifers. The top one was very problematic, it has a clay content from memory I think it was between 10 & 20%. Water and clay are very difficult to work through as compacted clay is impervious if you drill a hole into it the water may not flow towards it.
When disturbed the structural strength is very poor resulting in advancement of 0.5m per day.
The middle aquifer is thinner but is sandstone and water will flow through it. The structural strength when disturbed is also poor but not as bad as the top aquifer. I believe this is non confined aquifer so water flows through it.
The Lower confined aquifer could be ancient water trapped in this strata.
The rock is soaked like a sponge made from the debris of ancient glaciers . Structurally very sound but allows water to trickle through it. Once dryish the Decline can proceed safely at a more advantageous rate.
The evaporation ponds at surface are not showing a lot of water build up from the satellite images. This is either the evaporation rate is equalling the pumping rate or the pumping rate has fallen and the evaporation rate is lower.
A lot of cloud cover like yesterday will reduce the evaporation rate.
Higher rainfall will also dilute the saline solution so the drying salt’s won’t be so apparent.
In my own mind I feel this break is intentional for the contracts to change from an exploration Decline to a Production Decline and still awaiting approvals ( only conjecture on my part but seems logical).
Anyway the aquifer will not be a problem once the Decline recommences.
This is from 2 wheelman as he’s on the bus going home
“Hi Bamps, good to meet you and Richard tonight. I did make a few notes as follows:
The 220m offered by the 3 banks for the 30% could easily be scaled upto 730 for 100% of Hav, but may need 1 or 2 extra banks to spread exposure. SD also said some hedging of the gold price may be looked at to give the banks additional security in that scenario. Plan would be to get a starter mine up and running to get FCF asap, then scale up...said they'd spent 3 yrs I think unpacking what that looked like.
Suggested Ggp's Last right of refusal would deter other bidders for Hav// telfer but stressed several times that he thought this process would be relationship driven.
He seemed very confident as though things are progressing in the background but obviously couldn't say as much. I came away confident in my investment but things won't happen overnight.“
Hi Ace
I would have to check but there is a closure document, I would be very surprised if there wasn’t a bond to cover the reclamation costs.
I believe I’ve seen a figure of $500m but don’t hold me to it.
The closure costs should come out of the bond.
On some / most construction projects there are bonds redeemable after completion and maintenance periods lodged with a third party bank.
The closure costs should be redeemable