You are extrapolating incomplete and selective information provided by the company to draw conclusions about the whole deposit.
If you can't see the logical flaw in your thinking/process I can't help you. I can only suggest a course in Inferemtial Stats could be a good starting point.
Alternatively if you believe you have found 'the needle in the haystack' I might suggest Nicholas Taleb's 'Fooled by Randomness'..
CDU Price at posting:
$1.93 Sentiment: Sell Disclosure: Not Held