help with yesterdays ann

I'm just a busted a*** airleg miner so i need help with the calculation. I see that there are companies out there that when they make announcements they use the assay data to come up with copper equivalents.

Can anybody help me with coverting the following data from yesterday into a copper equivalent

ECDD002 48m @ 2.18% Cu, 1.97 g/t Au & 619 ppm Co including 32m @ 2.87% Cu, 2.76 g/t Au & 734 ppm Co

ECDD007 46m @ 1.43% Cu, 1.51 g/t Au & 996 ppm Co

Thanks in advance

alimak