Calamine (mineral) enough was known of metallic zinc to make brass solder directly by combining copper and spelter (zinc ingots). In 1738 a patent was granted to William Champion, a Bristol brass founder, for the large-scale reduction of calamine to produce spelter. In 1684 a paper presented to the Royal Society touched on the medicinal and veterinary properties of the compound when in finely powdered form. Calamine (mineral) Calamine is a historic name for an ore of zinc. The name "calamine" was derived from "lapis calaminaris", a Latin corruption of Greek "cadmia (καδμία)", the old name for zinc ores in general. The
Rolled Alloys Rolled Alloys Rolled Alloys is a private company headquartered in Temperance, Michigan, in the United States. Rolled Alloys is a supplier in the metal industry for both heat resistant and corrosion resistant alloys. The company has between 201-500 employees throughout the world. Rolled Alloys' key markets are Aerospace, Chemical Processing, Medical, Oil and Gas, Power Generation, and Thermal Processing. Rolled Alloys Canada also deals in the Pulp / Paper and Mining markets. Rolled Alloys has expanded through acquisitions of other companies: Harvey Titanium, Weaver Steel, Super Alloys, SMS London, Clasma Trade, and RA® Materials (formerly Weir Materials and Foundry). Rolled