Bethlehem, PA, United States
Samuel Wetherill (1821-1890). Chemist, industrialist, inventor, & Civil War officer. In 1852 he developed a process for extracting white zinc oxide directly from zinc ore. In 1853 he founded the Lehigh Zinc Co., with a plant here, pioneering the manufacture of zinc spelter and zinc sheet.
Listen to the audio guide for Blue plaque № 29157 Free on WIP — starts by itself when you arrive, even with the screen off