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17/08/17
14:43
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Originally posted by Nodferatu
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Skol, what's your thoughts on the 14, 18 and 33 day leach times for assay?
I'm not a metallurgist, but I know that's a long time just for assays given the standard time is 24hrs or less for leaching. Would appreciate anyone with expertise in this area to contribute further. I have asked a Metallurgist friend to throw his eye over BBX, he's busy for the next couple of months to do any serious DD but from his initial observations he's a skeptic on scalability with the current info they've provided.
Makes it become more apparent why they want to commence pilot plant testing so early in the development stage, before even proving a resource. Proving economic scalability could take years, if ever, with no apparent resource or extraction model to compare it to. Appears as though they'll need to find another technology breakthrough for viable commercial extraction, as they apparently did with the assay method.
If that is what becomes 'routine' time for assays, how will they incorporate timeframes like that for grade control drilling once a decision to mine takes place? Won't be much mining going on as they'll forever be waiting for GC assays. Many will say 'all they have to do is just dig it out of the ground' but it doesn't work like that anymore, hasn't for a long time.
So many critical unknowns they need to work through which makes this a high risk play at this MC imo.
The market would have already valued this much higher (possibly $1billion +) if many of the assumed 'conservative facts' in this thread were true, or even remotely true. Surely that must make you wonder, or maybe the broader market just doesn't have the knowledge or facts that appear on these threads?
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Hahaha! You're asking Skol for his "expert" opinion? Hilarious!
To address longer leach times you build more leach tanks to increase the volume of solution in process. If you have a longer train of tanks (or bigger tanks) it increases the production rates.
Why don't you read this instead to get some understanding instead of asking the resident troll: https://www.911metallurgist.com/blog/gold-cil-process-explained
Anyway, at 360g/t how important is scaleability?
They're gonna make bucketloads of moola from 100,000tpa outa their trial pits.
100,000tpa at 5oz/t is $750M . Production costs will be tiny.
$750M will finance a huge drillout and the building of a decent mill although a small mill, say 1Mtpa will yield $7.5Billion per annum