Re: Some very rough numbers

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CUU own 25% Schaft Creek: proven/probable min. reserves/940.8m tonnes = 0.27% copper, 0.19 g/t gold, 0.018% moly and 1.72 g/t silver containing: 5.6b lbs copper, 5.8m ounces gold, 363.5m lbs moly and 51.7m ounces silver; (Recoverable CuEq 0.46%)

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Chappy726

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Re: Some very rough numbers

in response to

Some very rough numbers

chops

posted on Oct 12, 2012 03:11AM

Thanks for sharing your calcs Chops. I think you need to account for the level of production and the life of the ore body . You have 150 ktpd and 200 ktpd operations lasting 25 years on the same, finite ore body. If you use the total 1.228 B tonnes in the M+I of the RE, the 150ktpd operation would last 22.75 years; the 200ktpd operation would last only about 17 years.

That shaves off a bit of totals. The metal recoveries are also quite important. From the 2012 RE:

Cu Recovery rate0.865

Mo Recovery Rate0.609

Au Recovery Rate0.733

Ag Recovery Rate0.580

At my former employer... we call the move I just made 'the seagull' (think of someone that swoops in on someone elses's work, makes a bunch of noise, sh1ts all over it, and flys away....)