Around 12 percent of Brazil's Amazon charcoal works still uses slave labor despite a major crackdown since 2004, the regional industry watchdog, Citizens' Coal Institute (ICC), said. Charcoal from the region's works is supplied to local producers of pig iron, a raw material for steelmaking... Brazil's Companhia Vale do Rio Doce (CVRD), the world's largest iron ore miner, last week announced it was axing iron ore supplies to two Para state pig iron producers, Cosipar and Usimar, because their activities "do not comply with the environmental and/or labor legislation in force in Brazil."