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Monday, July 9, 2018

Pretium - at last....

Brucejack's Q2 production figures were released today (link), and from the nearly >C$2.50 share price increase over the last month (including 13% today) you can tell that the market was happy, as  for the first time, the mine has expectations!

At last the head grade is approaching the reserve grade!
Let us break down the figures.

Au production


Blue = actual; red = planned (PEA); Green - difference

They were slightly under (3,300 ounces) from the Planned production figure outlined in the PEA, but a 3% difference isn't a huge amount for a nuggety gold deposit.


Au Head-grades


A huge change
Slightly under (14.9 vs 15.4), but a huge turnaround from the previous quarter.

Recovery


Still great!


Mill Throughput - quarterly




Slight dip, probably due to a planned shutdown for maintenance (probably 3 days in total).

Mill throughput - daily




We can see a dip in Q2, the mill was operating ~100 tonnes below capacity (2604 tpd vs 2700 tpd).


Now the hard part - they have to maintain it, as they can't use the 'ramping-up' excuse anymore if they don't meet their projected production figures.








Tuesday, July 3, 2018

Altar - It's all about that As

Altar project, has a problem...



Come on babe, I'm about to put it down
And all that As
Go ahead and lock the door, you're about to work it out
And all that As
Won't you lead me to your whoopee spot?
Oh it don't make no sense all of that As you got
'Cause I done called it too that you see booty flu
With all that As

Oh baby all that As

Whip your hair in those stiletto heels
And all that As
I'm about to dress you up in hundred dollar bills
And all that As
Driving me crazy baby don't you pump the brakes
You better call the cops, I'm about to steal the cakes
On all the evidence they got my fingerprints
On all that As

Oh baby all that As

Or visually,
Source: 2013 technical report - Stillwater mining
This shows that there is an ~inverse ratio between As and Cu. So, high-As in the low grade (<0.4% Cu) and lowish As in the high-grade (.0.5%) core. However, we still see that concentrates produced by Altar will probably contain at least 1% As.

Why is this a problem? Penalties - here is a nice article for a few years back from International Mining (link). Highlights:

  • China Imposes a limit of 0.5% As on imported base metal concentrates
  • Few smelters will treat >1% As and will charge a penalty to do so (link)

It's all about that As








Monday, July 2, 2018

Siesta time GMV?

Darn, those technical reports must be hard, look at poor GMV Minerals, requiring an additional 2-3 weeks to file a technical report (link).

Shame that was >2 months ago.....