IC 8225 - State of Arizona Department of Mines and Mineral ...

STRUCPURE OF THE INDUSTRY 255TABLE 69.-TwenCy-Jfve leading copper-producing mines in the United States in 1968, o~der of out#4b6r8Dlo11n13141616111819102122232426ley Bert&?).. . .sun hwl .................. Old Hat ..................... Arizona ........... Magma Cogper Co ....-......-.-Chino ........................ Central ..................... New Medm ...... Kenoeoott op Cor~ .......--CopperQw-LavenderPIt.. Warren (Blake)............llrlrom ........... Phel ~~dgs&& .....---..--- Do.N~W cam. ............... ............................. do ..................~ apity ...................... 2.8 ........................... copper, gold+~ver ores.insrsl Creak (Ray)............do ............. Kemwtt Copper Cow ......--- Copw~te ~lne ................... LA& su or ............... ~~chlsan ......... ~ ~ Pine t e ....-..--.%.""copper compiration ................... GlobG ............... Arlrom ...--...... mpirstion Consolidated Cop Do.Ydngton .................... Yeringtan ................... Nevada ........... ~eA%onda~om y ....... Do.Llwy Pit ................... RobiasOn (Ely)..................do ............. gennerntt CopF cT ......... Do.Mianlon ...................... P h ........................ &horn ........... A~ll~ll(~~.Srneltmgan R e W Do.Co.ES per- ...................... do ............................ do ............. Dud Sulphor & Potssh Corn- Do.my.silver Bell .................... Silver Bell .................. .do ......-...... A m Srneltlw and Refln- Do.ug GO.Capper Cltlrs ................ OlobMLami. ................... do ............. Termassee Cor8 ._..............DO.Plma ......................... PLma ............................. do ............. P h Mining o ............... DO.Ma- ....................... Pioneer (Suprior).. ........-.-.. do .....-......- M- Co w Co .............. Copper, goldIlver ores.Co perhill .................... Polk County ................ Ten- ......... ~enwsw &ppr co ........... Copper-zino ore.c9met Q asla, roo ........ Lake soy............... MI cNgsn...~~ .... Calumet & Heoh In0 ........... Copper ore md talW.Bydad ....................... Eweb sgdad) ........... Arirom ........... sagdad co per dorp Copperore.predpltate.3. ,Miad ....................... 0l0be-dlaml .................... do ............. T e n s Eorp ...... l .Pel0 Ye& ................... Plms ............................. doB~nner M CO .............. COP^ me.Daisg ....................... ..... do ............................ do ............. P h Mh&8. .....--........- (I.Ore ab .................... Aahe Comiy ................ North Camlina ... Appslachlan Sddes, kc ....... DO.CopK.Om'TABLE 70.-Principal copper producing corn- such material is necessary, the principal operapaniesin the United States, 1968 tion of the dealer consists in accumulating andsorting material from smd manufacturers andMine fabricators and reselling it in quantities thatCompanyproduction, can be conveniently handled by the brass mills.short tansAmerican Smelting and Refining Corn- Ipany ..............................The Aosconda Company ..............Bsndad - Conner - - Corn. -...............Banner Minina Co-:. ........-----.. .ICalumet & HGla, Inc .................Duval Sulphur & Potash Co ...........Inspiration Consolidated Copper Co. .--Kennecott Canner Corn ...............A.Magma Copper Co.. .:...............Phelps Dodge Corp ...................Pima Mining Co .....................San Manuel Copper Co ......Tennessee ~orp.-~iarni'E~~~&~ivision.White Pine Copper Co ................Sourm: Amerlrsn Buresu of Metal Statistics, 1W.Secondary wpper smelters produce a minorproportion of secondary refined copper; theremainder is the product of the primary smeltenand refiners, which use scrap as well asprimary raw materials. The other large groupof scrap-metal consumers is the brass mills.which use chiefly new scrap generated inmanufacturing articles from new sheet, tube,wire, and other brass-mill products. Muchbraswnill scrap passes directly from theeenerators back to the mills from which the:he& and other shapes were purchased, withoutbeiue handled bv dealers. Certain auantitiesof b&s-mill sckp customarily move throughdealen, but since little or no preparation of-MarketinaMining produces ores that are milled toconcentrates; concentrates are smelted produceimpure blister copper; rehng eliiatesimpurities and produces copper conforrmng toestablished specifications; and fabr~catmg producessheet, strip, rod, bar, wire, tube, apdshapes. Marketing ,u not a major operationuntil after the refinmg stage; however, 6rmsengaged in only one or more of the processesprecedin refining sell theu product m the formmade. !herefore, there are market traqsactionsinvolving or-, concentrates, and bhtercopper, as weras refined metal.Ores and Concentrates.-The majority of thecopper-mining companies in the United States(producing about 25 percent of ,the annualoutput) do not have the smelters mth whlch totreat the products of their mines. Largecompanies that include smelting in their ,operationsor that are prmardy engaged m thesmelting business either purchase the ores apdconcentrates from these independent companiesor treat them on toll. Thepractice of buyingand treatine ores and concentrates or of treatingthem on ta in a smelter is known as customsmelting.Purchase of ores and concentrates is facilitatedby a schedule, that is, a contract betweenthe buyer and seller. The sale is atIected by