Bulletin . d to the crusher and bin above thefurnace. (See Photo No. 14.) The grizzly (1 aperture) is on wheelsand can be moved across from end to end of the ore bin. It is expectedlater on to reopen one of the lower tunnels, and drive a raise up intothe present ])oint of working; after which llic on will he trammeddirect to the fiiiiiacc bins, witliout rciiniiMni:- the wagcin haul. qCnCKSlI VER RESOURCES. 79 The reduction equipment consists of a 60-ton Scott fine-ore furnaceto which are connected three series of condensers. The first series isof brick, consisting of 10 compartments, each 14x3
Bulletin . d to the crusher and bin above thefurnace. (See Photo No. 14.) The grizzly (1 aperture) is on wheelsand can be moved across from end to end of the ore bin. It is expectedlater on to reopen one of the lower tunnels, and drive a raise up intothe present ])oint of working; after which llic on will he trammeddirect to the fiiiiiacc bins, witliout rciiniiMni:- the wagcin haul. qCnCKSlI VER RESOURCES. 79 The reduction equipment consists of a 60-ton Scott fine-ore furnaceto which are connected three series of condensers. The first series isof brick, consisting of 10 compartments, each 14x38xl2 averageheight (the top being sloped). Next is a series of 10 cast-iron cham-bers similar to the Knox-Osborne type. 3 wide x 9 long x 5 and 4high, the slope being on the bottom; with an interior baffle extending2/3 of the way down from the top; and connected by vitrified pipe(see Photo No. 64, post). The third series consists of 2 rectangular,wooden chambers 10xl8x9. The fuel used is wood. The blower is. ..^.rm JliuauabS. Photo No. 14. Bins and furnace plant at the .ffitna Mine. Lake County. driven by a 1^ h. p. gas engine and the rock breaker by a 15 h. p. Fair-banks-^Morse, type Z, 350 r. p. m., oil engine, using a grade of fuel oiljust below distillate, at a cost of 60<-70( per 8-hour day. The high-grade soot from the condensers is worked on an inclined plate, and theresidue washed over riffles and through a series of baffle boxes. Therewere 30 men employed, miners being paid $ per dav, and muckers$ Bibl.: Cal. State :\Iix. Bur., Reports V, p. 96; XI, p. 72; XU,p. 362; XIII. p. 597; XIY, pp. 284-286; Chapter rep. 1913-1914: pp. 111-114; Bull. 27. pp. 72-76. U. S., Mon. XIII, pp. 354. 371-374; :\rin. Res. 1884. p. 492; 80 CALIFORNIA STATE MINING BUREAU. 1892, p. 148; 1902, p. 252; 1909, Pt. I, p. 553; 1910, Pt. I, p. 698;1911, Pt. I, p. 901; 1912, Pt. I, p. 942; 1913, Pt. I, p. 205; 1914,Pt. I, p. 326; 1915, Pt. I, p. 269. Min. Res. W. of Roc
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