yes you are exactly correct! investment bankers cannot predict with any certainty past a 30-32 yrs.mine life - it's a mute point to spend "more money and time" proving out more resource, and does not factor into their calculus when approving the loan. To stress the point that the ore-body has a 220 years ML is wonderful - but 32 yrs. mine life is at the upper limit for bankers calculations. Mark Smith has explained all this before.
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