daytrading oct 1 pre-market, page-25

its all just general, there are no real rules


lots of things come in to play with discovery


grade
type of ore
minerals in the ore
depth to ore
country risk
geography
water availability
roads/power
can the mineral be released cost effectively form the ore ( recovery )
capital costs of plant



the best thing you can do is find companies actually making money and work backwards to there drill results and study why they are economic etc etc etc