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Ummm diamonds at Canning 👍

I was asked a question at the Stroud meeting what else is nearest to a mine.

That’s a difficult question.

If Decka and Stingray are mineralised you have to think of the size. Havieron has 300,000m of drilling these 2 targets could be 2 or 3 times bigger so there will need to be a tremendous amount of drilling but Free cash flow from Havieron could pay for it.

Pearl would be next but only a small mine, could be an open pit.

A site strip on Blackhills could be an early mine.

Ernest Giles - Meadows is so big sometime away.

Yennarie has jumped up the pecking order in line with EG in my view.

Rudall is deep, that drill intercept Don mentioned follows the strata in a fold by the looks of it but still early days there and Ggp are hoping to find mineralisation at higher levels.

Thought it was a reall good interview by Liam.

Well done

I copied these hydrological plan and sections from the original assessment

See here:-

https://www.ggpchat.co.uk/viewtopic.php?t=815.

As I’ve said previously if the Decline can accelerate from 5m per day to 8m a March finish could possibly be on but remember that’s at the same level of the ore but 100m away

To me the Decline reaching the orebody is going to be the key to Havieron and will create excitement as it inches closer.

The predicted dates I’ve posted have been a range depending on the previous average at the time of the distance released by the company.

There have been 4 strata to get through each with their own issues producing separate averages, so putting them together gives a false average.

The 3rd layer down, the middle aquifer, was very slow going due to incoming water, resins may have been used to stop this inflow.

This 4th layer has been better than I expected apart from the week for H&S training.

It’s nearly through that approaching the 5th and final layer, the lower aquifer.

Therefore the 5m average for the 4th strata may not be correct for the next one.

The 5th layer is a strong rock it should be capable of structural stability for a 6.5m advance but the water issue is yet unknown although earlier bore holes have indicated a lower water content, we will have to wait and see.

My predictions were based on each strata’s average projected forward at that time showing different dates depending on that average at that specific time.

Starting from the 8th October ( time of last announcement) 2,030m the Decline has 770m to go. What we don’t know is how many more passing bays will be formed and there is one vent drive running parallel with the Decline but we haven’t reached that point yet.

Separating the operations out 5m per day would give the 9th March for the Decline plus then the vent drives , stock pile drives and passing bays would be a June finish assuming they equal another 770m.

My thoughts though are that the strong rock will assist the Decline advance to accelerate bearing in mind the water conditions might hinder that.

Byrnecut would probably be on a bonus to complete early and a penalty for a late finish I presume

Bertie I’ve been much closer in my estimates than most people have got to.

I have always stated we don’t know what speed they will achieve in that lower aquifer no one does till they start.

If you go back through my posts you will always find I’ve been saying Feb/March

If they achieve that 24m in the lower aquifer then Xmas could have been possible but with a weeks training January, but that’s a big if.

The water is pumped out probably with a series of pumps into the evaporation ponds. Making use of the vent shafts possibly.

The aquifer is an underground watercourse to Lake Dora but is probably percolating rather than running, we shall soon find out. Being salty the ponds on the satellite will turn white.

The Decline design will reach the underside of the Permian cover but that’s not the top of the ore body, that will still be 100m or so further away at the same level.

The Decline will start its descent into the Production Decline around a smaller spiral.

The point is Bertiesboy according to the 3D graphics the ancillary drives and vents have been reduced considerably.

The last spiral has been pushed lower into the aquifer into the stronger rock.

Besides the Decline there is only one other vent drive going through the aquifer, so unless the graphics are incorrect June is a very conservative date but may start to include the lower production levels outside of the ore body. These permissions are still awaiting.

Hi Barna

They had that week of H&S training after that accident at Cadia they were doing 5m per day upto then

The Decline average is not much use from ground level down to the lower aquifer. Each strata needs to be done in isolation.

The top levels had a clay mixture, clay and water are not a good mix to try and work through, everything turns to slop.

The one they’re in now has a low clay content but dryish.

The lower aquifer is a hard tillite rock so if the water is on the low side an acceleration in the Decline will become quickly visible.

In hard rock each advance can go as far as the Decline is high therefore 6.5m with less structural support works like resin.

Jundee record advance was around 24m.

Until they get into the aquifer we are not going to know the speed they can achieve, this should happen around the 2100m mark, that’s 70m as 8th October. Could be early next week .

Hi James

The new figure of 2030m means the average is back to 5m per day , so a length of 2,800m would be end of Feb.

Hi James

I doubt the Decline has reached 2,000m yet, I asked Shaun several times about the average daily rate and he wasn’t forthcoming with any info and was surprised we knew about the accident at Cadia. That accident he said led to a 3 day Health and Safety course but I think it was 5.

My 5m average rate should have given a length of 1940m by the 21st Sep but turned out to be 3m, therefore 25 days on it may be 1980m.

In the last interview he mentioned the lower aquifer and breaching into it, my calcs suggest the breach to be at 2,100m.

From the bore reports they reported water quantity estimates from P90 high to a P10 low, from the last assessment the estimates were nearer the P10. Shaun gave the impression it was going to cause issues and the size of the evaporation pond looks like they are expecting a lot.

In London Shaun also said they are putting in far more overtaking bays than planned.

I don’t think these are just tunnel widening points as the wider it goes the higher the roof has to be. I would imagine it’s a dual tunnel for a few metres.

Releasing the water pressure in the aquifer could slow it up initially but it’s a harder rock so the rate should accelerate if the water pressures ease.

The Decline layout has totally changed according to those graphics, ie less metres for the ancillary drives and vents.

He was being very conservative by saying reaching the ore by June, Byrnecut contract finishes in May. That is everything completed by May.

He stated in that interview there is still a lot of work after that to reach the first production level

Looking forward to the Stroud meeting tomorrow night from 6pm Fromebridge Mill

The geologists will have been studying the half of the core not sent to the assay lab in the Core Storage area.

It’s a big target difficult to model from one drill core without the assay results.

Decka’s RC drilling the samples will be in sacks all bagged up so difficult to model without a core and assay results.

Havieron, Stingray and Decka are a paragenesis event along a north faultline where the spacings are 10km apart, it’s a known phenomenon.

For more information on Yennarie see the Ashburton thread

https://www.ggpchat.co.uk/viewtopic.php?t=805

Different geology to Havieron as being metamorphic rocks

Leake Springs metamorphic rocks is medium grade sandstone schist metamorphic and chlorite-serecite

That could indicate copper oxides

These are processed differently to Havieron copper sulphides which go through a floatation circuit, oxides are leached like at Nifty.

We are not privy though to the information the company has but the neighbours are finding Rare Earths I’ve not seen gold . Kingfisher to the north has copper.

No drilling yet on these tenements.

Looks like Yennarie has jumped up the pecking order.

https://www.ggpchat.co.uk/viewtopic.php?t=805

The ponds are essential as the Decline is approaching the lower aquifer, the water is hypersaline and is not fit for any use.

The aquifer starts at approximately 2100m Decline length and at last presentation was at 1906, so a few weeks further on it’s getting close.

The rock strength in this aquifer is strong so the advancements should start to increase as the roof structure supports itself during excavation prior to stability works.

In the soft rock previously they could only advance 0.5 to 1m before support and resins pumped in to strengthen it, now in the hard rock less works are now required before the stability with the shotcrete meaning acceleration.

Hi Mf11 missed you at the Town Hall is that the first one you didn’t get to?

I quite agree with you what miner would not grab at early revenues from this orebody having spent 3 years getting to it.

Stoping is the only option for mining where the surface is not effected. It also is the only one that can pick out the high grade crescent from this shaped orebody.

They’ve moved the last ring of the Decline closer to the orebody showing that ground disturbance from block caving is unlikely.

That was a very subtle attempt at FUD, perhaps he would like to expand on what other mining method they will use?

Tig you have stated you see no reason why they can’t tell us why there is 20moz down there and the sp to rise accordingly.

That’s misleading in the extreme and very naive.

The only others accepting your views seem to be the likes of the Fred’s. Very embarrassing in the extreme.

It’s time for you to change the subject

The last MRE covered practically all of the infill drilling resources announced in the PFS turning 86% of these resources into reserves.

Since 80,000m of drilling has been on expanding the resources called growth drilling. This also included the drilling of Zipa and Havieron North and quite a few other drills that produced no significant results.

There were also a few holes for ground testing and water bore holes.

It’s not possible to estimate a MRE from this sort of drilling.

I’m afraid you lot do not understand this 80,000m.

There is 420m of cover so at the top of the ore body when they first started drilling an 800m drill had 50% of its length in the cover.

Going down into the Eastern breccia they start the drilling from way out so a 2000m drill with a 200m intercept is 90% in waste rock.

80,000m is total drilling not intercepts.

8-10,000m is more realistic this is NOT going to double any figures that’s pie in the sky.

Two of us have sent our calculations to Shaun and he told us not to get over optimistic and I can tell you it’s nowhere near 50% increase for the resource.

This won’t happen till the underground drilling will start.

You are all getting too ahead of yourselves.

Don’t make prat’s of yourselves.

Tig you are building peoples hopes up too much keeping on going about this MRE and that clown Freddie has aligned himself to you to get at me.

You will be in for tremendous disappointment.

The Feasibility Study is the obvious sp catalyst and then the Decision to mine which Shaun has already said that Decision was made with the Box cut starting.

The next catalyst is reaching the orebody.

The Decline can only take 3mt per year so the only thing an MRE would give is a longer mine life and that can only be based on the reserves which are not likely to go above 4moz.

Calling for this MRE now is really naive it’s not a catalyst to boost the sp.