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18 <br />Braxoh - 6. <br /> <br />M I,$;~;II,,(i_ ,;&;; _M'_I;H:E'; ;M':E-T H 0 D 9- Contix. <br />',The level stations a;q ~prggided::with)paesage-way: around~tho <br />workixg shaft and thp,shaf~t.~fe.;eeonred-on esoh aide by pillars <br />of grouad enffioipat t~o;reeanre safety. <br />The method employed for ore eatraotion is drifting sad over- <br />hand stoping. Sullivan Eisohine flrille are employed. <br />:,': .tr <br />The method employed for timbering in the shaft ie oribbing <br />and in the drifts and etopia~atulls oovered with leggixg.are <br />used. The timbers are prepared by hand from pine, are is good <br />.. .. •. <br />u •..:.:..: °.. <br />aoxdition aad~suYfioieht' in alai and number to insure setety. <br />Ho underground tramming i.e•done~anfl there~sre no~ohutes. <br />A Ho. 3 ~)ean.9team pump, piaaed at the,~160-ft..,level, is <br />used for handling water in the mine. The oapaoity of the pump <br />ie 60,000 gallons every twenty-four hours and it in only neo- <br />. ..'; , <br />weary to nee it three hours daily.. <br />The vextilation is xatural aiQ ntrifioient. Ho aoxioue gases <br />are met with. <br />All old timbers iutQ Gekrria. hsve'~been removed from under- <br />grouxd end the eaxl.taiy o~na¢itioxe are good. <br />Qandles are used for ligh'tirg uxdergrouna. <br />0 <br />9 T D T I 8 T! 3.,.P, S~ ,~~ , ', <br />(iron ~ tonnage Yot. given,, <br />Average if~~xage per moxth, noxs. <br />', 'n,J: it.: ~a" 9'1:x'.; ~ :f:' ,, •t,~'. ..~ .._. <br />Avsrsgs va~us of ore per ton, $30., <br />Ooet per ton traxeportixg of ore, $2.b0. <br />Oost,per ton brestment of ore, $7. <br />Average ooet per mosth of powder, $1E0. <br />n n n n ~~ power, $100. <br />n ~ n n n, n steel,.$8. <br />n n n n n oil, $10. w <br />Cost of braxsportixg supplies to mixe Saoluded,ix above. <br />