RIO

"Alberto Calderon, BHP commercial director, said the price rises gave the company the edge in its battle to take over rival Rio Tinto as the increase in coking coal prices, in which BHP is bigger, outweighed increases in iron ore, where Rio is superior."

http://www.telegraph.co.uk/money/main.jhtml?xml=/money/2008/04/10/cnbhp110.xml