About 35 years ago, von Wolzogen Kühr and van der Vlugt, working at the laboratory of the Provincial Water- works of North Holland, proposed a theory to account for the severe anaerobic corrosion of iron pipes in soil.1  The soil where this corrosion occurred was primarily low-lying land, high in organic matter, which had been flooded by the sea so that larger or smaller parts of it were under water for considerable periods of time.

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