How I get 0.02 70.5 grams per ton of concentrate
5.1 kg of concentrate
Thus, the amount they actually had in their sample was 70.5 * (5.1 * 2.2) / 2000, or 0.396 grams
The 5.1 kg of concentrate came from 19.2 tonnes of original sample.
The NR was quite clear that the 5.1 kg was the TOTAL result from ALL of the 19.2 tonnes.
If you get 0.396 grams from 19.2 tonnes, that's 0.396 / 19.2, or 0.0206 grams/tonne
Sorry, I don't see what's "screwed up" about these numbers. Someone please fill me in.
If they'd reported .35 grams/tonne, in an alluvial deposit, the stock would be over $2.00 right now, and I'd be leading the buying.