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MINEBK00445
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Last modified
1/5/2009 12:35:23 PM
Creation date
11/18/2007 12:06:43 PM
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Mine Books
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Teller
Volume
14
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dollar of shaft and at eaoh levees ~,.a„~,,.,. •+4.r <br />is loaded by cars dumped directly into skip skip <br />guides are 4 F. 4 Oregon pine; all level stations are <br />provided with passageway around working shaft, and shaft <br />at all statiora is provided with guard rails, and is scoured <br />by pillars of Around on each side sufficient to insure <br />dafety; sll vrinzes, end mill holds are covered or <br />surrounded with guard rails. L`.ITIF Y.ETHOD of extracting <br />ores, filled atopes tuaohitte drills Hatmner and Piston <br />drills are Pmployed; tinb~rire by stalls and lagEing <br />and is sufficient; liners used nFtive ~apruco ~^d Pine' <br />round: and condition fair o9~ztes are loaded hY gravity <br />and by hand; underground trar.ming by steel oars on 8~ <br />T. rail traok; trcekage 2,000 ft. ventilation natui•&1 <br />and is ~vffiolP.nt; no noxio~.is E;asas cre r.:et with, and <br />all old tir~bera have been retroved f1or.: underground r,ork- <br />itlgs; shaft is divided into twa-compartments,nnd is <br />provided with ladder~'laYa wh1~h are secure acid accessible, <br />and contains air line, and landings .:re provided in ladder- <br />way not to exoeed 20 ft, apart; there are no winzes or <br />mangays oonneating levels. Mine has mtore than one exit <br />for employees; through the Shurtloff mine and is readily <br />soceseible; 11Q;hting underground try dandles; <br />S T A T I S T I C S. <br /> <br />-,--- <br />Average tonnage Per mont <br />Development: <br /> <br />Total nulaber of <br />feet in shaft 1100 <br />Cost per foot ~lo,oo <br /> of Peet in drifts and levels 1500 <br />Total number <br />t #8 <br />post per foo . q00 <br />Total number of foot in arose-cute <br />Cost Per foot ~8. <br />200 <br />Total munber of feet in winzes and raises <br />Cost per foot #8. <br /> feet in development 3200. <br />Total number of <br />
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