discovery of a huge porphyry system, page-159

Bigstar the 10 grams of silver credit is worth around $13 aprox. Copper isabout $9k per tonne or $90 per 1% of copper, this would give the 10 gram silver credit an aprox value of 0.15% Copper if we add this to the 3.2% copper the copper Eq grade would be about 3.35%.

Silver is just north of $40 per ounce and ive just worked with $40 silver, to acheive a 1% copper grade with silver we would need around 70 grams per tonne. That aside i like the amount of effort you've put into your post with the relative imfo on Oyu Tolgoi.

Thanks