Charles Martin Hall was an American chemist best known for developing an economical method for producing aluminum. Born on December 21, 1863, in Thompson, Ohio, he created the Hall-Héroult process in 1886, which involves electrolyzing aluminum oxide dissolved in molten cryolite. This breakthrough made aluminum more accessible and affordable, revolutionizing its use in various industries. Hall's innovation led to the establishment of the Aluminum Company of America (Alcoa) in 1888, which became a major player in the aluminum industry. His work not only advanced materials science but also contributed to the growth of modern engineering and manufacturing practices. Hall passed away on December 27, 1914.