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Some microbes used poison gas in battle for iron in the Earth's early oceans, geomicrobiologists find
and others by reacting the iron with nitrate as an oxidizing agent. An international research team including Dr. Casey Bryce from the University of Bristol and Dr. Verena Nikeleit and Professor ...
Scientific American6d
Conversion of Cast Iron Into Wrought Iron—The Heaton Process
The application of these oxidizing agents is to be made to the under surface of the molten iron, so that the oxygen may act from below upward through its mass. The nitrate or chlorate is to be ...