The above chart shows the dollar values per company. Yanacocha (NEM, BVN, bit of IFC) is number one, with Antamina (Xstrata, BHP, Teck, Mistubishi) 2nd, Southern (PCU) 3rd and Misquichilca (ABX) snapping at their heels. But if we look below at the Year Over Year change in exports.......
...the true nastiness is clear to see. Note Yanacocha (dedicated gold mine) has held up its export revenues quite well, but the base metals players (Antamina, Cerro Verde, Southern, Doe Run) have been whacked around the head with a thick piece of wood.