Sorry cedartree, I am still confused. 1 cubic meter contains rougly 2.6 tonnes of rock. So if we are given let us say 26 grams per meter, I will have to divide by 2.6 to get 10 grams per tonne? I don't know if that is correct or not?

Since these presentations are supposed to give us (and prospective) shareholders information we easily can deal with and compare with other companies and sites, I think that they should stick to grams per tonne. For their own analysis etc, sure do what they think is best