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18:53
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Originally posted by 5hareholder
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I can tell right now that pretty much all of the ore more than 200m below surface is uneconomic to mine with an open pit given the conditions of Rocklands; haul distances are too high given that the strip ratio will go through the roof and the grade generally decreases with depth (to below 0.8% CuEq). So if they have hopes of mining this project long term, beyond 10 years, they will definitely need to resort to underground mining. Sublevel caving is popular for the area, but rates any higher than 2MTpa would be a pipedream for a deposit of this shape.
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Serious question, what do you base these figures on and why is it not achievable because crazy talk does not cut it as an explanation, perhaps a little about your mining experience and region.
