E/MJ : engineering and mining journal . r-W X OF RAT. ARIZONA LES AT RIGHT, RAT CONSOr ,11 >ATED NO. 2 PLANT IN BACKGROUND. -OARSE-CRUSHING plant, HEADFRAME, HOIST HOUSE AND MACHINE yjloP .VT AHIZnXA HEU 316 Engineering and Mining Journal Vol. 108, No. 8 Status of Flotation in Spain The Process May Be Utilized To Recover the Mineral Content of Dumps Dating Back to Early-Rome—^Ramifications of Minerals Separation in the Future DevelopmentOf the Spanish Metal Industry Madrid Correspondence MINING engineers in Spain have reached the con-clusion that it is no longer possible to concent
E/MJ : engineering and mining journal . r-W X OF RAT. ARIZONA LES AT RIGHT, RAT CONSOr ,11 >ATED NO. 2 PLANT IN BACKGROUND. -OARSE-CRUSHING plant, HEADFRAME, HOIST HOUSE AND MACHINE yjloP .VT AHIZnXA HEU 316 Engineering and Mining Journal Vol. 108, No. 8 Status of Flotation in Spain The Process May Be Utilized To Recover the Mineral Content of Dumps Dating Back to Early-Rome—^Ramifications of Minerals Separation in the Future DevelopmentOf the Spanish Metal Industry Madrid Correspondence MINING engineers in Spain have reached the con-clusion that it is no longer possible to concentratelow-grade ores by older processes in competitionwith ores concentrated by flotation, owing to the lowercost by flotation and to the higher percentage of recov-ery obtained by that method. It had been observed bythese engineers that today the bulk of the copper andlead concentrates produced in the United States is de-rived from plants using the flotation process. Theyare informed regarding the practices in the importantlead-producing plants of southeast Missouri, Idaho, andother centers of large production, and the large cop
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectmineralindustries
