traded upon the LME/COMEX/SFE, but delivery is achieved directly, logistically moving the physical copper, and transferring the copper sheet from the physical warehouses themselves. The chemical specification for electrolytic grade copper is ASTM B 115-00 (a standard that specifies the purity and maximum electrical resistivity of the product). See also Biomining :Category:Copper minerals Copper mining in the United States Extractive metallurgy In-situ leach List of copper mines List of countries by copper production Metallurgy References Bibliography Gill, C. B. (1980) Nonferrous Extractive Metallurgy, John Wiley and Sons: New York, External links The Copper Development Association's copper production page. Copper Processing, from an online text on metals, Illinois Sustainable Technology Center, University of Illinois, archived in May 2017 National Pollutant Inventory – Copper and copper compounds fact sheet University of Pittsburgh School of Engineering Chemical and Petroleum Engineering Department, Froth Flotation Lab notes. Copper Mine, college course syllabus, emphasis on chemistry, last updated 2000 Metallurgical processes Extraction Smelting