Rio Tinto invests in derelict property to prove it can make cleaner, greener steel

Mining giant Rio Tinto is pouring a quarter of a billion dollars into a derelict property in East Rockingham to prove it can make cleaner, greener steel. It's been working up the technology for a decade in a process that'll swap coal with agricultural waste. For more, Geof Parry reports.See omnystudio.com/listener for privacy information.