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    The Curious Case of the Exploding Pig Farms

    This pig farm was devastated by an explosion due to foaming. Ross Muhlbauer, Iowa State University At first, the manure was just harmlessly foaming. Only later on did things get lethal.  Hog farms in the Midwest are great big barns sitting on top of great big pits filled with a great deal of awful-smelling manure. […]