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Gold/Mining/Energy : Twin Mining (formerly Twin-Gold) -- Ignore unavailable to you. Want to Upgrade?

To: Letmebe Frank who wrote (348)	3/15/2002 7:21:58 PM
From: russet	Read Replies (1) \| Respond to of 613

Odds in the Diamond Exploration Biz,...following up from a question I asked WillP and the thread several weeks ago. ACA provided some figures at their technical session held at the PDAC. Of the 6395 kimberlites found world wide to date,... (1) 14.5% or 928 have diamonds in them (2) 4.1% or 264 have a grade > 3 carats per hundred tonnes (3) 0.75% or 48 are producers (economic enough to mine) so with some probability analysis we can answer the question (based on averages of all world kimberlites): Given a kimberlite is diamondiferous,...what is the probability it will be economic enough to mine? Chance of being diamondiferous: 0.145 Chance of being economic: 0.00751 Therefore chance of being economic given diamondiferous: 0.00751/.145 = .05 Therefore the chances Freightrain is economic is 1 in 20 or 5% as long as the distribution of kimberlites in the world is normally distributed.