sentences:  He also learned the basics of chemistry in the laboratory of his father, Bethuel Keith & Co., a physician and chemist in drug manufacturer (Bethuel Keith 1811-1884).In 1860, at age 22, he followed the Pikes Peak Gold Rush to Colorado where he spent nearly a decade mining and milling in the Central City-Blackhawk area.He experimented with various processes to work the rebellious gold ores (see "Ore Roasting Furnace" Patent No.