Science: That Tin

Induction-heating by radio waves has come to the rescue of the tremendous program of tin-saving announced by U.S. Steel Corp. last spring (TIME, April 6). By electroplating tin on sheet steel, ½ lb. of tin may be spread over 100 lb. of steel. The old hot-dip process used 1½ lb. So $15 million worth of tin electroplating equipment was built, on the expectation that much tin used for U.S. tinplate would be saved. Nowhere before has electroplating been done on such an enormous production scale. Some single tinning lines turn out a continuous sheet...

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