West Perth - based iron ore miner Mount Gibson Iron has flagged an $ 850 million to $ 950 million impairment after the company put its Koolan Island mine on care and maintenance in December.
(06/25/2009) Vale, the world's largest miner of ironore, has signed a $ 500 million joint venture with Biopalma da Amazonia to produce 160,000 metric tons of palm oil - based biodiesel per year, reports Reuters.