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I doubt if the PFS will contain much detail of the deeper bulk cave but future works will have to be taken into account with the sub level caving.
I personally think the sub level cave will go right round the SE crescent and remove everything from the east of the Dyke down to 350 of ore and then another 350 of ore afterwards before a bulk mine operation lower down possibly 600-700m.
When that is exhausted they maybe able to remove the remaining 600m by bulk caving if techniques improve some other form of mining. That will get them to 2400 m below surface.
After that it won’t concern me :((
I just hope I can say one long geological word properly before I go :))

The Eastern breccia are deep they’ve already got to 1443m depth of ore and it’s still going down.
The 342m @ 2g/t is above the 1300 depth of ore, that is definitely commercial and getting better as it goes down

Bulk caving is one of the most cost effective forms of mining, once the capital outlay is done gravity breaks the rocks up as it moves downwards.
Cadia has a huge bonus with molybdenum they extract it from the copper concentrate .It’s piped from the plant to a new extraction plant before being piped to a railhead and to the port for export.
It’s a $100m profit and reduces the AISC right down into negative values.
That’s why I’m very keen on them finding another mineral within the concentrate and the obvious one is cobalt but Norf refutes this. If it’s possible NCM will go for it as there is at least 3moz au eq

Hi Hydrogen
You’ve forgot the old adage
“Gold pays for everything, copper is the profit”
Add the 30% back on :)))))
Don’t forget the highest copper intercepts
1 x 12%
3 x >8%
:))

Hi Hydrogen
I believe your copper figures are conservative with the low average grades you’ve used
Economic grades were 0.2% but with the price shooting up this has the effect of the copper lower grades becoming economic.

The way the gold cut offs are used on the results has the effect of losing the copper grades where the gold criteria doesn’t match the cut offs.
This is more dramatic in the high grade cut offs than the lower grades as this is where the high concentration of copper is located >0.6%.
There has been a lot of high value copper intercepts I’ve noticed disrupted by the gold cut offs.

I’m still working my calcs on 0.2% grade
On 930,000 ,000 tons that’s about 1.86m ton copper.
Copper has a recovery factor of about 84%
So that’s about 1.562m t
Yesterday price $9355
= $14.6bn less 10% +$13.14bn
30% = $3,900,000,000 to Ggp

Hi Hydrogen
That works out about $2100 per ton of concentrate.
Concentrate contains 25-30% copper
Approx 4 ton concentrate = 1 ton copper

Hi MH
It takes about 4 ton of copper concentrate to provide 1 ton of copper.
I’ve always found it difficult to find what companies get for concentrate.
NCM do eventually get the realised price for copper I believe in the last results it was around $9,300 plus the credit payments for other minerals. They are deducted transport costs and smelting costs and also debits for some minerals like arsenic which have to be disposed of

Hi Malva
Had 141W1 is actually 30/40m shorter than 141 , where the drill W1 leaves 141 it’s angle of trajectory is nearly horizontal so it appears longer where 141 is about 60 degrees.
I don’t know what Norf’s theory is but from what I am seeing the cemented breccia in the Northern corridor are being fed from the Eastern Breccia and forming around the SE crescent .
The Eastern breccia are not separate to the main ore body it’s all one, 141 confirms to me that my lower ovoid theory is becoming more evident.
Copper values in that drill look weak though

Hi Malva
If you follow the drill 141 through the sulphide ring and out of the ovoid ( not Eastern breccia) the 23m intercept is 200m horizontally from the ovoid, no point measuring from 84 that’s curving away to the east.
141 W1 seems to be horizontally further out from the ovoid because it’s a flatter drill not so steep but it’s drawn 500m out but that can’t be right

The 23m intercept on 141 is definitely 200m away from the perimeter of the ovoid.
When you look at the section it scales the same as the plan although it’s pointing to the wrong intercept.
Drill 141W1 in assay looks interesting slightly shorter than 141 but it’s on a shallower angle and has gone further horizontally out, on the section it’s 300m from the perimeter but the plan scales 600m that could be a slip up.
Very disappointed that 90 wasn’t released a very long drill could prove the connection between the Eastern and SE extensions, it certainly looks odds on

If you don’t think the gold price is going to go up take some time to look at a few gold mines around Witwatersrand- the largest global gold field ever.
Kloof mine - South Africa’s highest grade gold mine with a life of mine expected till 2021 depth 3700m
Driefontein West closed East issues with going deep
4000m
Beatrix expected life 2025

There’s lots in the same boat all we’re producing 100,000+ , one as high as 700,000.

Gold stocks are going to dry up.

Going down to 3,800m is risky stuff methane, high air and rock pressures, rocks bursting , more waste coming out with the ore.
I’m not sure whether 3,800 could ever be block caved but there’s a good chance Havieron will keep going deeper
This was a good conversation regarding specific gravity and shear strength
https://www.researchgate.net/post/Can-Specific-Gravity-of-soil-affect-its-shear-strength-behavior#view=5c095b34a7cbaf46230e47b8

I do get asked a lot of questions, most times I can give an answer.
The wife asked me what is P for in GGP?
Answers on a postcard :))

Hi Redtrader
Tonnage quantities relies on what minerals they’re finding which give differing specific gravity.
The company are using 2.7 for the breccia and 3 for the sulphides.
Now the sulphides we know have a large % of Chalcopyrites these have an sg of 4.1-4.3.
We also know that the volumes and quantities of sulphides are increasing, therefore the average sg should increase .
Using 2.7 as an average gives a tonnage = 827m
Sg 3 = 907m
I’ve used 3.4 for the sulphides and 2.75 for the breccia = 930m
I’ve used a slightly higher breccia average as the cemented breccia have a higher sg than crackle and the cemented volumes have been increasing.

The additional 43m depth last night would add 37m ton to my figures for 2.7 sg

Hi Antigua
In the Dec RNS it does state which zone will be targeted for the Indicated Resource.
It’s not the same zones as the last one.
It’s just the SE crescent zone and only down to 350m.
It’s a lot smaller than the last so it’s obvious it will have less but the sulphide grades and volumes have Increased dramatically. I wouldn’t like to comment on what drills maybe included.
I feel it will be around the same sort of gold eq quantities.

The Inferred one in December will be much more a value driver as it could be big, last night’s results may be included but there’s a lot of hold ups with the assays so it’s hard to know which areas can be included by the end of Oct.

My friend just phoned me, he said if you had bought Wishbone in 2012 you would have lost £2.90 today.
I’ve not looked but maybe right.
There’s big money to be made in mining or oil / gas but you can also lose loads, Ggp is a safe investment to grow over the mid / long term.
Right at this moment we are being controlled by the movement of Institutional money, they are here they are not waiting to come in like some think on here. There’s not a lot we can do about it unfortunately.
There will be a host of new Institutions ready to buy once the PFS , FS and Decision to Mine are published.
Just sit tight and enjoy the ride

Hi Lenz
The Eastern breccia it first started out about 200m long x 100m wide x150m deep. It’s grown now to 600m long the width has increased I’ve not checked yet but the future width could be twice the size.
The in April the overall ore depth was shown as 1300m but reduced slightly to 1250m in June making the Eastern breccia 350m deep.
Drill 141 has found ore at 1343m making the eastern breccia 443m deep

8 drilling rigs currently will be drilling continuously for multiple years to come in this world class deposit.
More Bottle shows then :))

Hi Scott s
You are going from a tier 1 mine to what!!!!
Big big mistake very foolish

133W1 includes 6 intercepts of 30g/t cut off within 80m of each other(yes 6). 11m in total length
30g/t cut off means every metre within the intercept must be over 30g/t
There is a lot of cemented breccia in between these intercepts and some crackle at the start reducing the overall average to 7g/t

Each firms section drawings look different again especially for 133W1 NCM show the sulphides expanded and Ggp shows the original size.

If anyone is still thinking my theory of a lower ovoid is not valid take a look at the drill 141W1 shown in light blue still in assay and 81W1 is following it
https://greatlandgold.com/wp-content/uploads/2021/09/20210909-GGP-Announcement-Havieron-Exploration-Update-jorc.pdf
Page 14 section 3 bottom right
It’s sticking way out

On that section look at 141 right down the bottom it’s showing another intercept passed the last one