Ore with 62% content in Qingdao jumped 7.2% to $73.70 a tonne, according to the Metal Bulletin, the highest price since April 11 and the largest one-day percentage gain since December 1, 2016.
It now expects adjusted earnings per share to come in at $5, significantly higher than the $3.75 it had forecast just three months ago and almost doubled the $2.90 it had originally projected for the year.
Philippine President Rodrigo Duterte said on Friday the country's mining industry pays too little in tax and not enough in compensation for any environmental damage.