When the war began, plastics were far past the gadget stage. They were passing the stage of being chiefly substitute materials. Now, pushed by wartime technology, plastics are major materials in their own right. There are many new types, and plastics are preferred for many jobs. The full catalogue would be long and complex. Suggestive items:
> A whole new family of plastics is based on the element silicon, rather than the element carbon which provides the chemical skeleton for the majority. These "silicones" are the result of research by Corning Glass Works (glass...
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