Iron oxidizing bacteria in open water in slough across from Walt Peirce's cabin No flash player has been set up. Please select a player to play Flash videos. Video not playing? Update your browser or download the video clip Sam Demientieff, Knut Kielland and Neil Scannell discuss the presence of iron oxidizing bacteria in this open water area. Process Observed: Open WaterIron Oxidizing Bacteria Date Process Observed: Saturday, March 31, 2012 Galleries: Slough across from Walt Peirce’s cabin Gallery