Mueller Co. is a Chattanooga, Tennessee-based company that manufactures fire hydrants, gate valves, and other water distribution products. Mueller Co. is the largest supplier of potable water distribution products in North America. Mueller Co., along with Anvil International, are subsidiaries of Mueller Water Products, Inc. Mueller Co. was founded in 1857 by Hieronymus Mueller in Decatur, Illinois as "H. Mueller, Gun Shop". Mueller closed the business briefly in 1858 to prospect for gold in Colorado, but returned to his business not long after, expanding it to include sewing machine and clock repairs and the sale of hunting and fishing equipment in addition to gunsmithing. By 1880, the focus of Muellers business shifted from manufacturing guns to manufacturing plumbing goods, and in 1885, Mueller changed the name of his business to "H. Mueller Manufacturing Co." and he moved the gun and sporting goods division of his company to a separate location. By 1891, Mueller ran three separate businesses: a plumbing services shop, a plumbing goods manufacturing company, and a gun sporting goods store. In 1896, Muellers manufacturing business had grown so much, the family sold its gun and sporting goods business in order to focus entirely on producing plumbing goods. Mueller Co.s previous headquarters location in Decatur started as a two-story brick building constructed in 1895 and was gradually expanded to include a third story, another three-story office building and warehouse, a power plant, a soda fountain manufacturing plant, an engineering building, galvanizing facilities, and a gym, among others. By 1960, the campus consisted of more than a dozen buildings occupying six city blocks. Around 1910, the youngest Mueller brother, Oscar, moved to New York in order to establish and run Mueller Manufacturings Eastern Division manufacturing and sales office, resulting in a sharp increase in the business the company did in Canada. In 1912, Oscar Mueller moved again in order to establish a new manufacturing plant in Sarnia, Ontario under the name Mueller, Ltd.