Further below is something I posted about a month ago.
Since then Q3 results were published.
Here are the updated San Juan trend results since commercial production began:
YTD 2007(total/average):
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1) Grade – 5.92 g/t
2) Recovery Rate – 85.5%
3) Cash Cost per Ounce (US $’s) - $324
4) Operating Profit Contribution per Ounce (US $’s) - $336 or 51%
5) Costs per Tonne Milled (Cdn $’s) - $57.12
6) Tonnes Milled – 54,131
7) Ounces Produced – 8,911
Results by category (by quarter):
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1) Grade
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*Q1’07 – 5.93 g/t
*Q2’07 – 5.56 g/t
*Q3’07 – 6.23 g/t
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2) Recovery Rate
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*Q1’07 – 87.7%
*Q2’07 - 84.7%
*Q3’07 – 84.8%
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3) Cash Cost per Ounce (US $’s)
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*Q1’07 - $323
*Q2’07 - $305
*Q3’07 - $342
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4) Operating Profit Contribution per Ounce (US $’s)
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*Q1’07 - $333 or 51%
*Q2’07 - $353 or 54%
*Q3’07 - $329 or 49%
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5) Costs per Tonne Milled (Cdn $’s)
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*Q1’07 - $56.92
*Q2’07 - $52.41
*Q3’07 - $61.51
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6) Tonnes Milled
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*Q1’07 – 14,000
*Q2’07 – 19,030
*Q3’07 – 21,101
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7) Ounces Produced
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*Q1’07 – 2,234
*Q2’07 – 2,882
*Q3’07 – 3,795
Now here is the post I originally posted on Nov. 8’07:
A total of 1.2M ounces of gold were produced on the San Juan property, by both “formal” and “informal”, miners since 1970.
1) Vein thickness – thickness of veins currently being mined at SJ appears to be in line with typical historical vein thickness. The drill results also included mineable widths.
SJ Tech Rpt: “Veins normally range in thickness from 10 to 80 centimeters”
Oct. 29’07 NR: “The average vein width mined at San Juan is approximately 40 centimeters with a mining width of about 1 meter.”
Oct. 29’07 NR: “Mineable widths and grades of gold were intersected by the drill program.”
2) Grade - the actual SJ grade, for both Q1 and Q2, are consistent with diluted historical grades mined at SJ since 1970. The drill results also included mineable grades.
SJ Tech Rpt: “Diluted grades of mined ore have been in the range 3 to 8 grams per tonne Au since 1970.”
Actual Q2 grade – 5.56 g/t
3) Cutoff grade – the cutoff grade (3 g/t), that is in place with current SJ production, is consistent with the (historical) economical cutoff grade utilized since 1970.
SJ Tech Rpt: “Organized, industrial-scale production since 1970 has amply demonstrated that mining and processing of veins grading over 3 grams per tonne Au was economic at gold prices of over $350/oz.”
Oct. 29’07 NR: “The current cutoff grade at the present gold price of over $US 700 is 3g/t Au.”
4) Gold price – historically, dating back to 1970, the SJ operation has been economical with gold prices above $350 per oz. Today’s gold price is $830.
5) Cash cost per oz – if the historical economic gold price has been above $350 for SJ, it means that SJ has historically produced gold for less than $350 per ounce. SJ delivered a cash cost per oz of $305 in Q2 (similar in Q1) – consistent with historical performance.
6) Recovery rate – Q2’s actual rate remained within the ranged observed by CAM (the independent consultants that prepared the tech rpt) during the early stages of restart of production. Going forward, the recovery rate will vary with grade.
SJ Tech Rpt: “Gold recovery has varied recently from 81 to 85 percent”
Actual Q2 recovery rate - 84.7%
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