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Recent laboratory bench scale and pilot plant metallurgical tests at Mountain States R and D International have demonstrated that some copper ores because of relatively co**** copper sulfide mineralization can be preconcentrated by heavy media separation (HMS). In tests with a copper ore from the AMT Copper Creek project near San Manuel, Arizona, HMS preconcentration rejected about 75 to 80 percent of the feed as a minus 13 mm gravel. The HMS concentrates copper recoveries were about 93 to 95 percent. With the incorporation of HMS preconcentration, significant capital and operating costs savings have been projected for the proposed AMT Copper Creek concentrator. An overview of the HMS preconcentration step development for the AMT Copper Creek project is presented. Also presented are other potential applications of HMS preconcentration for copper ore processing
... The main incentive for pre-concentration is economic. For the AMT Copper Creek Project in Arizona, a pre-feasibility study estimated capital costs were more than 50% lower with dense media separation than using direct flotation and operating costs were 44% lower (McCulloch et al, 1999). For the McKinnon Creek deposit in British Columbia, pre-concentration significantly improved the economic viability of the project, due to the reduced waste disposal costs and lower transport costs as preconcentrated ore was to be transported to an existing processing facility some distance from the mine (Trafford, 1998a(Trafford, , 1998b. ...
... More recently, AMT have elected to install dense media separation for pre-concentration at its Copper Creek project near San Manuel, Arizona. Crushing to À13 mm followed by DMS will reject 75±80% of the feed while maintaining copper recoveries of 93±95% [15]. Although the primary incentive for these installations is increased plant capacity and reduced capital and operating costs, bene®ts are also realized for waste management.
I don't know how old this is, bit shows on this mines pre feasibility.....around 50% reduction in Capex and 44% in opex!!
It would be safe to say the company still intend is to sell on BR. The hurdle being the buy back agreement with AA. What is required is to put a package together ‘with just enough,’ that triggers the buy back for AA to make a decision.
It would be counter intuitive to think that the company would have to show they are heading toward 100% funding to develop BR. A junior, getting up to a billion to finance a project! No never.
My understanding is that they would need to show a capability to fund their 20% that is relative to terms of the agreement. The importance of NPV and an IRR to show viability is of course essential toward that.
Generally, once an NPV is known, unless a company with an intent to mine it, already has the financing in place to take the project into the development stage some of that NPV will be given away in either huge dilution, or to a partner to achieve that. Where Xtract have a sell on, there will be a further 20% discount to the acquirer, on top of the discounted cash flow that takes into account the cost to build the mine basically. Colin mentioned in an old podcast whilst discussing how if would be valued if it went to third party valuation.
So if xtract can improve NPV/IRR whilst also lowering CapEx with reduced capacity plant, that further discount could be as much as 10% less, toward a higher valuation if AA decide to take on the project.
As much as 50% less of the 20% discount ;-)
Indeed howzap, I'm not trying to be accurate.....I'm just pointing the horses in the vague direction of some water ;).
Hi lucky, thanks for, and from your posting
>>Although the primary incentive for these installations is increased plant capacity and reduced capital and operating costs, bene®ts are also realized for waste management.<<
We would then assume that new scenarios will be formulated showing initial mine lives between 10-20 years. If there is a solid case at BR for increasing plant capacity with the appropriate technology if is suitable. As well as reduced tpa plant and 20-25 year mines and whatever else is in between.
Another serious consideration as to why modern ore sorting tech is being assessed is if AA are to be interested, in taking BR on it is a ‘necessity’ anyway, to have the ‘concentration study’ in place, showing potential to use the technology, as will need to satisfy their own ‘ambitious’ Sustainable Mining Plan targets of a 30% improvement in energy efficiency and a 50% reduction in fresh water abstraction by 2030.
There is probably not a mine in operation that doesn’t employ some form of ore sorting or another.
It is a given that whoever buys it ‘will’ utilise ‘modern’ bulk ore sorting.
On reflection, I'm feeling bad about - my kinda recent - line(s) on .5p per per word as minimum legal tender re Howzap being paid for posting here... etc..
My recalibrated thinking is that Howezap should more reasonably be categorised as a top 10 poster on this BB .. so apols to him fo that.
And, more generally, I feel compelled to go back to the thought that I've offered before here.. and readily offer again now: this BB is, in the round, an excellent BB .. and long may the level of quality generally posted on this BB continue (please)
(I'm confident it will, not least because this s/p has many holders here under the gun tro one extent or other .. and still the quality, balance and lack of pettiness persists.. )
Ta NtM although I feel sometimes I just annoy people, but if something seems to fit, then I’ll put two and two together.
If he was me, and he was quoting on here, who is he?
"I wouldn't say I was in the top ten posters. But I was in the top one.”
“We discuss it for 20 minutes and then we decide I was right”
“I’m a little bit of an idealist, I do believe in fairies, and that is my outlook.”
Ok here’s the giveaway,
“The River Trent is lovely, I know because I have walked on it for 18 years”
I would like to thank Howezap for his contribution and knowledge. Every question I have asked he has answered in a balanced manner. Yes, he is optimistic about this company but that optimism is not exactly widely shared. I have lost my trust in CB. Every recent step he has taken has resulted in a further drop in value, perhaps exacerbated by his interviews. However, I am actually reassured by Howezap's assessments. Maybe they should do a job swop for the month ? Dubai v East Midlands.
CB clearly is overly optimistic and is deliberately deceptive at times, but these are his buys in the open market since Bushranger drilling started:
Jan 23 1.78 GBX 1, 250,000 £22K APPROX
Aug-21 3.50 GBX 2,054,700 £72K
Apr- 21 5.70 GBX 1,000,000 £57K
Feb-21 5.84 GBX 1,000,000 £58k
Total £209K invested of his own money in the open market. Most buys at significantly higher price than current SP so he is significantly under water.
So even he must have thought that some of what he was saying was truthful !
Never know, in 18 months we may find it was :)
No I’m not a ‘paid’ basher Dani, It is an absurd suggestion I might even get 5p a word too. We had already established that the agreement is, If I get to 2million words, (they have to be ‘joined up’ words btw) or I make a decision to mime, Colin said he will let me have the use of his old office swivel chair!
Hi Eastern every single poster has their own agenda, I suppose I am no different! but be assured I always try to post objectively, and always try to support with some reasoning behind.
It’s posts like that from Andrew that shows the underlying confidence there is from the gaffer that drives me to keep digging and continue to try to “second guess what the company are trying to do.” Having a healthy interest in the whole BR story helps too.
Hi Dani just to be clear I am ‘not’ paid in any way for posting on this or any public bulletin boards.
NicetoMichu and I were sparring partners back in phase 1, I respect his views as a LTH and enjoy their unique writing style and ‘humour.’
Would call myself a mining enthusiast that simply has far too much time on their hands and normally too much to say.
Keep your posting up Dani all members contributions are valued.
''I gave my players a version of the same message at ten-to-three every Saturday: 'I would shoot my granny right now for three points this afternoon.' They knew how important it was to give everything in the cause of victory. Every time. That's why my granny enjoyed more lives than my cat.''
I hope Mr Colin Bird has the same religion on getting the Xtr share price back up to a decent level !!
If he was me, and he was quoting on here, who is he?
"I wouldn't say I was in the top ten posters. But I was in the top one.”
“We discuss it for 20 minutes and then we decide I was right”
“I’m a little bit of an idealist, I do believe in fairies, and that is my outlook.”
Ok here’s the giveaway,
“The River Trent is lovely, I know because I have walked on it for 18 years”
Some great Cloughie quotes right there howezap :)
Is it true CB personally made £40m in the Kiwara sale back in 2009 ? (someone on ADVFN mentioned)
If so, £200k is hardly risking anything
In most cases, barren rock is harder and, consequently, more difficult to grind than the mineral carrying ore which is often found in the weaker areas of the rock due to dissemination and other geological factors. The harder the rock, the longer the grinding time and the lower the mill throughput. Also, hard rock results in overgrinding the ore and uses more energy.
So with the increase in head grade by a reduction of the ore by as much as 50% from bulk ore sorting, before it goes for the more energy intensive secondary grinding, in theory, the reduction in energy consumption would be far more than the comparative 50% reduction in ore.
As processing of the Bushranger ore contributes between 49% and 61% of the total production cost across the 16 cases examined in the interim report, BOS will help slash those production costs adding to the positive impact overall toward recoveries, capital and op costs.
The industry average Open pit ‘mining’ cost distribution is,
The industry average Open pit ‘mining’ cost distribution is,
Try again,
The industry average Open pit ‘mining’ cost distribution is,
Mining 50% consisting, Drilling 5%, Blasting 6% , Digging 9%, Hauling 30%
Milling 50% consisting, Grinding 30%, Flotation 10%, Dewatering 10%
Was just within that range to begin with!
There might be a bit of a change of sentiment in here, I see some buying returning today and yesterday and if copper does what everybody expects it to do, we might move along with it.
I can sell 900K no problem. Previously over the last 2 weeks it was hard to sell and when I could max of 400k to 500K.
Too early to call the reversal but possible some green shoots of recovery???
Maybe Q4 results next week will help things along......or slow things down :)
Oh go on then...
Wouldn't want to be out of this over the weekend!
That you got to say that ahead of me Ben 'owell has already ruined my weekend :-(
Wake me up when this gets back to 2.5p.. as it never should have gone under that anyway
imho & dyor