He started a company in Dallas manufacturing gypsum bandages for hospitals to use in making plaster casts for broken arms and legs. The name Hardcast comes from the "hard cast" these wet strips of gauze created. While sticking to medical supplies might have been enough for some people, Bennett had an idea that was far ahead of its time: Why not use the gypsum strips to seal the ductwork attached to the many furnaces and air conditioners now being installed throughout the South?
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