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Who is the largest copper producer in the US?

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Journal Article•DOI Energy and greenhouse gas impacts of mining and mineral processing operations Terry Norgate, Nawshad Haque - Show less +1 more 01 Feb 2010-Journal of Cleaner Production 441 Citations	In the case of copper ore, the crushing and grinding steps make the largest contribution to the total greenhouse gas emissions for the production of copper concentrate.
Journal Article•DOI Copper Accumulation in a Reservoir Ecosystem Following Copper Sulfate Treatment (St. Germain Les Belles, France) Eric D. van Hullebusch, Philippe Chatenet, Véronique Deluchat, Philippe M. Chazal, Didier Froissard, Michel Botineau, Axel Ghestem, Michel Baudu - Show less +7 more 01 Nov 2003-Water Air and Soil Pollution 34 Citations	The largest amount of copper was probably adsorbed on downstream sediment or lost in running water.
Journal Article•DOI Effects of copper deficiency on the structure and microwave properties of YBa2Cu3O7−δ films deposited by laser ablation Tsutomu Yoshitake, Wataru Hattori, Shuichi Tahara - Show less +2 more 23 Sep 1998-Journal of Applied Physics 11 Citations	The copper composition is, therefore, a crucial f...
Journal Article•DOI Labor productivity, costs, and mine survival during a recession☆ John E. Tilton 01 Jun 2001-Resources Policy 25 Citations	The US copper industry over the 1975–90 period provides empirical support for this expectation.
Journal Article•DOI Nondestructive analysis of faience beads from the Western Zhou Dynasty, excavated from Peng State cemetery, Shanxi Province, China Zhou Gu, Jian Zhu, Yaoting Xie, Tiqiao Xiao, Yimin Yang, Changsui Wang - Show less +5 more 09 Jul 2014-Journal of Analytical Atomic Spectrometry 21 Citations	The possible sources of copper colorant are copper ores.
Journal Article•DOI Chemical analysis of archaeological copper and brass from Northeastern Ontario R. G. V. Hancock, W. A. Fox, T. Conway, L. A. Pavlish - Show less +3 more 01 Aug 1993-Journal of Radioanalytical and Nuclear Chemistry 11 Citations	The results were compared with reference data for native copper and European trade copper and indicate that of the 17 copper samples in the suite, an archaeologically-unexpected high number of 12 were made of native copper.

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