1square kilometer = 1000m x 1000m
3 meters thick = 3,000,000 cubic metres
specific gravity of say 2 = 6,000,000 tonnes
100 tonnes per square kilometre therefore = 15 ppm
= fuck all...this is why the share price tanked....
unfortunately I am a large shareholder and deeply dissapointed
it would appear they have nothing but a sniff
live and learn