Member Info for Bamps21

Regarding the plan on page 7
https://greatlandgold.com/wp-content/uploads/2022/06/20220609-GGP-Havieron-Exploration-Update-with-images-vF.pdf

I’ve got loads to say about it.
No one has seen what I can see about it.

In the London meeting with Shaun the Q&A in the room I managed to get the last question in.
I grabbed the microphone and said hi Shaun I’m Bamps which brought a giggle from everyone
“When are you going to announce the size of the ovoid has increased?”
He didn’t really get what I was on about:))

Now have another look :))

Someone was close :))

How many of you have skipped over the plan on page 7
https://greatlandgold.com/wp-content/uploads/2022/06/20220609-GGP-Havieron-Exploration-Update-with-images-vF.pdf

Notice anything?

My thoughts on NCM MRE which is due in August:-

The PFS MRE was issued with results upto Feb21
An MRE from them was expected in Feb22 which didn’t materialise and was to be based on figures upto mid Dec21.
Ggp issued there own in mid Mar22 based on those results released by 9thDec21.

What we are looking for is bankable reserves which are totally different to in the ground inferred/indicated resources.
The PFS MRE announcement showed
“14Mt of Probable Ore Reserves mined over an initial 9-year life, from a throughput of 2Mtpa
The PFS does not consider 37Mt of the current Inferred Mineral Resource or any potential new resources that may be defined in Northern Breccia and Eastern Breccia”
“ Initial Probable Ore Reserve estimate:
14Mt @ 3.72 g/t Au and 0.54% Cu (4.58 g/t Au Eq) for 1.6Moz Au and 73kt Cu.
Therefore this probable/mineable/bankable reserves were upto Feb 21

Ggp MRE
Shaun told us “. Through an independently verified analysis, the total Mineral Resource at Havieron has increased to 6.5M oz of gold equivalent, an increase of almost 50% in 10 months of drilling.”
That is a resource figure upto Dec21
The probable reserves was declared at 25m tons containing 2.4m oz au and 93kt cu , 2.9moz eq
That’s a 50% increase.

Therefore 2.4m is the figure to look out for upto Dec21

The indicated resource figure will always be higher than the indicated reserves as there will be a certain amount lost in the mining process
This has increased from 0.6m ton in the PFS to 2.4m ton in GGP MRE

The indicated resource infill drilling programme has been far more intense in the sulphide high grade zone as it is a very complex structure where the estimation process can’t be carried out with any certainty without close spacing of the drills.
Most of this infilling was completed by Dec21 results but large areas of the NW pod and the central corridor was not complete leaving an uncertainty on the estimation.

Less complex zones ie Eastern breccia do not require a high drilling density and can be estimated with more confidence.

Drill 55 in the last results was still infilling the sulphides.

This next MRE in Aug will probably give us an indicated reserve slightly above the 2.4m oz and possibly increase in the inferred/indicated resource but not a massive increase from Ggp estimate.

The following MRE in Feb23 should keep growing the resource and reserves and then again in Aug23

Hi Panama
You missed a good meet up last night.
Sat round in a circle with questions flying around to Costa , his wife said “explain to them about shorting the way you explained it to me”.
I understand it now :))

Great surprise to me that Costa came very interesting discussion:))

Thank you thedoors for arranging this meeting another successful night.
We found out there is a room where we can have a slide show/ talk for the next meeting.
Plenty of room to park a caravan if you want to come to the next meet up.

What a great night so pleased to meet new and old acquaintances puts faith back in the human race. :))

Let’s wait and see what tomorrow brings

Hi Dot
Are you assuming they are in good ground or do you know the drillers :))
The last photo I saw there were no rock bolts going up the sides they were still inserting reinforcement bars.
To insert rock bolts to the roof there needs to be at least 10m above the roof to hold them.
Therefore from floor to top the Decline needs to advance 112m from where it starts to enter the hard rock.
Hopefully in the results we will get to know the advance rate

What’s that got to do with drill rigs????????

What interest is it to readers of this Board what I think about the share price, absolutely none.
Such drivel

What has that to do with drilling

Silverhorse do you have to spoil the thread with nonsense posts.
Chose your own nonsense heading

When are we likely to see more development jumbos at Havieron?
Well not quite yet.
At the moment they’re still working on the Exploration Decline and this will continue to the ore level or just below it.
This will only need one DD421.
Now I’m looking at a screen shot from the Environmental Assessment issued over 6 months ago. This is of a plan produced by a computer of all the Declines, accesses, stopes tunnels.
These will need government approvals which may or may not be in their possession till the Feasibility Study.
This was the first plan indicating a change in the Decline planning from 5 spiral rings to 4.
The Decline must now be somewhere near the first ring.
Following on after the first ring could be when the next jumbo comes in, because on that plan there are 2 steep accesses going down to the bottom ring all connected to the other rings by short access tunnels.
This could open up further faces of the exploration decline enabling the rings to be simultaneously excavated.
After the fourth ring there are 4 further steep accesses aiming for the ore.
5 jumbos may be in operation before Xmas so long as the approvals are in place.
I’m optimistic that tremendous acceleration of the Decline is possible in my view.

I will post that plan on our Stroud gang group site. For those not on it get yourselves down to Stroud next Monday night and join us.

Shame this site excludes photos

Planned drills for Havieron

5 development drills Sandvik DD421
These are the long boom twin jumbos for the Declines,access tunnels and stopes

2 production drills Sandvik DL 431
4 production drills Sandvik DL 421

These are for drilling the rock bolts and stope production

Continued
The drill rig also has an onboard 264-gallon water tank for water-only suppression of drilling dust. With no water lines to supply it, the rig is more mobile.

RELATED: Sandvik Forms New Business Area – Sandvik Mining and Rock Technology

Drilling tools themselves make a difference in production. Example: The new Sandvik model drills rock 55 percent faster than two key competitors in the market, according to Robinson. “So there is added efficiency from how quickly a feed length can drill a hole. Yet just as important is the overall life of the tool. If you can only drill 10 holes before having to change a bit, your down time eats away at your drilling time. We want to offer a producer tools that are at the top end of drill life.”

Operator issues

Other considerations in choosing an underground drill rig are less about a machine’s mechanics and more about operator well-being. The U.S. Mine Safety and Health Administration (MSHA) focuses on worker environment and safety issues, things like ergonomics for long-term physical comfort, reduction of physical hazards for an operator, and reduced noise and dust emissions. As recently as 10 to 15 years ago, many manufacturers placed little emphasis on these safety and ergonomic issues. Today, most manufacturers dutifully comply with MSHA regulations—and some conscientiously exceed the standards.

“It is important that the buyers of drill rigs spend as much money as they need to but no more,” Robinson says, and one bottom line is that machinery that exceeds MSHA standards costs more. “What we find is that if customers don’t ask the right questions, they don’t realize the overall value that’s being offered for the money. It is up to us who are selling our products to make sure the full value of a rig is made apparent to each customer.”

Operator safety issues will remain an overriding concern so long as underground machines are operated from a driver’s seat. That may not always be the case. Robinson knows of no underground aggregate mine in the U.S. that is operated solely with autonomous drilling rigs. However, the superior drilling accuracy and productivity of computerized, telematics-controlled rigs foreshadows their arrival in greater numbers in underground aggregate operations. “I do foresee that becoming more and more common.”
https://tunnelingonline.com/selecting-underground-drill-rig/

Selecting a drill rig

Logical first considerations for a buyer are the mechanical and hydraulic features that will maximize production. Tramming speed is one such feature. That is, how easily can a particular 25-ton drill rig “tram,” or move itself, from a drilled rock face to the next open face to be worked. None of these machines move quickly—generally less than 10 mph. Yet nimbleness and speed are relative. Every non-drilling minute reduces a shift’s total production, so one or two mph makes a difference.

RELATED: Drill-and-Blast for Tunnel Construction – A Historical Perspective

A producer should consider the speed with which a drill rig can position its boom or booms for drilling, because the efficiency of this set-up process also helps determine a shift’s output. After aligning itself for drilling, a drilling rig’s rock penetration and hole-flushing rates are the rest of the story. Drilling is accomplished with rotary percussion drills that are simultaneously pressed into a hole as they swiftly rotate and are forcefully tapped for extra rock breakage. Air and mist are constantly injected through the drill bit to flush out shattered material.

“This is happening at a very high speed, of course,” says Rick Robinson, account manager for Sandvik USA and a 20-year veteran of the industry. The most common feed lengths (comprised of drill rod, coupling, and bit) are 16 and 18 ft with finished holes ranging from 14.5 to 16.5 ft deep. “From the time you position a drill and start drilling, a hole will be drilled in anywhere from 50 seconds to two and a half minutes depending upon the hardness of the rock.” In short, quick is good and quicker even better.

One boom or two?

Another choice facing a producer is between single-boom drill rigs and two-boom rigs. The choice is not as obvious as it might seem. Robinson says that when a mine has 7 to 10 open faces to drill each shift, a pair of single boom drills can make fast work of it. A double-boom rig also will do the job, he says, “but because of other factors, production of a two-boom rig vs. a single-boom drill is not precisely 2-to-1. Typically, the two-boom rig will drill 1.5 to 1.7 times what a single-boom rig can drill. It depends on the operator and the hardness of the rock.”

A Sandvik jumbo single-boom model introduced at ConExpo, the DT912D, is representative of self-contained mobile units on the market. The articulated jumbo unit is 56 ft long when carrying its longest boom, weighs more than 26 tons and is four-wheel-driven. Powered by a 277-hp Cummins engine, the rig is a diesel-hydraulic self-contained unit, which means it operates its boom under diesel power rather than from electricity. Therefore, there’s no trailing electrical cord.

The rig’s Tier 4 Final engine has significantly reduced diesel particulate emissions compared to previous models, which somewhat offsets the environmental advantage of electric power. At the same time, fuel consumption has been reduced t

That was a waste of half an hour reading back through the days posts.
Bad or what
If you read back through what you have written stop and think for others who are reading it,” would I want to read that” , no! Then delete it before posting cos no one else wants to read such drivel either.

Just thought I’d change the Heading :))