http://www.theaustralian.com.au/
If there was a saving grace to the tailings dam collapse at BHP Billiton’s half-owned Germano mine in the mountains of Brazil’s Minas Gerais state, it was that the iron ore waste which has since found its way to the Atlantic Ocean some 600km away was not toxic.
That was the accepted truth from BHP and Brazil’s Vale, BHP’s equal partner in the mine, and the mine’s operating company Samarco. After all, BHP managing director Andrew Mackenzie had seemed to say so, and he’s one of the great geoscientists of the modern era. Last year he became a fellow of the world’s premier scientific club, London’s Royal Society. Past fellows have included Albert Einstein, Charles Darwin and Isaac Newton.
So when Mackenzie said that the tailings material that hurtled down the valley floor after the tailings dam was breached on November 5 was “relatively inert’’, there was relief all around.