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Last modified
1/12/2009 9:44:37 AM
Creation date
11/18/2007 12:07:52 PM
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Mine Books
County
San Juan
Volume
14
Document
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-4- <br />5~(i <br />Underground tramming is - done by mules. <br />The system of vent4lation is natural. <br />The shafts are divided into tyro compartments one for ladder- <br />c^ay and air pipe, the other for cage. <br />Landings do not exceed 20 feet a part. All levels are <br />connected by winzes &nd man~fays. <br />The Lune has five exits through openings to the surface. <br />electricity is used for lighting underground. <br />S T A T I S T I C S. <br />Average tonnage per :r,onth 3500. <br />Total number of feet in shaft, 1000. <br />Cost perfoot ;25.00 <br />Total number of feet in dcvalopement 5L000. <br />Coet of fuel $7.50 per ton. <br />Cost of timber .10¢ per foot. <br />Cos'. of poti:der .15¢ per lb. <br />Average assay value ore perton ;15.00 <br />Cost per ton Llining oi' ore 4.00 <br />Cost per ton transporting Ore .75~ <br />Cost per ton treatment of ore 1.50 <br />M17 L_' I_ F N P L O Y F. D. <br />20 I~!achine Drill L'en ~,~4.0o for Fright hour;;, <br /> <br />20 " lielpor5 r <br />.i.~0 n n v <br /> 3.75 " " ~~ <br />2 Timber l,:en <br /> 3.00 " " " <br />20 Trammers <br /> 3.25 " .. n <br />1 Ore Assorter <br /> 3.25 " n u <br />1 'Pop than <br /> 3.00 " " " <br />5 Laborers <br />s 4.00 " " ~~ <br />ayar <br />1 As <br /> 4.00 " " ~~ <br />5 Engineers <br /> 3.50 " " ~~ <br />1 Pump Nan <br /> 3.50 <br />„ <br />n <br />n <br />2 Firemon <br /> 4.00 " " n <br />8 Alacksmiths <br /> 3.25 " " ~~ <br />1 T eatnster <br /> 6.00 " ~~ <br />2 Foremen <br /> 6.00 ~~ ~~ <br />1 Superintendent <br />
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