. Mining and Scientific Press . I III BALL-MILL DEPARTMENT. KIRST ROW OF Wll [LEY T IB1 September 3, 1921 MINIiNG AND St [EN I II IC PR|->S Nevada Consolidated Copper Company IV Concentration of the Ore By Arthur 15. Iarsons As soon as it was definitely <-i<l.«l. in 1*106, to build the milling and smelting plants at McGills ranch, sur- were begun; and actual construction was started early in 1907, some months after tl ompletion of the da Northern railroad from Cobre on the SouthernPacific. The original design of the concentrator providedfor ten units, each divided into two sections, h
. Mining and Scientific Press . I III BALL-MILL DEPARTMENT. KIRST ROW OF Wll [LEY T IB1 September 3, 1921 MINIiNG AND St [EN I II IC PR|->S Nevada Consolidated Copper Company IV Concentration of the Ore By Arthur 15. Iarsons As soon as it was definitely <-i<l.«l. in 1*106, to build the milling and smelting plants at McGills ranch, sur- were begun; and actual construction was started early in 1907, some months after tl ompletion of the da Northern railroad from Cobre on the SouthernPacific. The original design of the concentrator providedfor ten units, each divided into two sections, having apapacitj of 500 tons per 24 hours, or a total iat• d capacityof 5000 tons of ore per day. Only the four southern unitsjrere completed, lor the reason that it was found possibleto obtain a much greater capacity than had been records show that between 8000 and 9000 tons of oreper day was being treated in seven operating sections inJune 1910, just two years after the first unit was put inoperation; and since then as much as 4
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