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r',: <br />~I i <br />i ~ : ', <br />f.,~i <br />,; ~ ; <br />'iii <br />E <br />~ i <br />~. <br />~i <br />''i <br />,I i. <br />•f i <br />.~~ <br />,: ; <br />~. <br />!', ~~ <br />1F„ t~~l <br />~.i ~ f <br />~~ ~i <br />;~ r <br />~: i ~I <br />., <br />'+~.. 1;1~;~,i <br />r~, ii <br />' I', <br />'~ ~'' <br />I ~~ ' <br />~~ ; I. <br />{~ ~ ~~, <br />~~ ~ ~ i~ <br />f1 I <br />} :' ~I <br />;,~ I ~ <br />a, , <br />~' ~~~ ~~ <br />i FI. tlII, <br />~; ~I'I I <br />~, ~, <br />~j ,Ili, <br />~ t~,,~ <br />~~ii <br />, , <br />;I~ , <br />~ ~'~~ <br />~~'~~~. <br />~i <br />,~ ~~;~ <br />Tennessee - b. <br />.-~ - •~^~oa~r-us^ <br />H S- B~ I R 8 &' "]C Z R E ~ M' S T H O D S .- Coatia, <br />` Yaps aaa~ drawings et'thb~'snrtaoe. aSS undfi~ro9znd rgfer7siigi <br />are kept in thi eStias ~ at - ~Tdaho'~ 8~"Pings, Colerada: ^ "~ "~ *'~ <br />Bireproor-3aofe: at~r-not rrq$i.red e't- the'aatrariee ti"tae= <br />tunnels ae there are no buildings near the portal ~Y''~'`~''- ^-'^;rr,- <br />' •Overhand stopitrg and'dfittiag'ere the ie~thade'employed <br />far ore eatraotion: llaugh~atoperr and dritteie eie employed'""' <br />and some single hand drilling is done. <br />Poet^ and oaps and atolls baoked with lagging are the <br />methsd~ employed t~r~timbering:'The timbers are.~ilpafed by <br />- head from pine and red eprnoa, are in good-ooaditienf"iih3niut=•' <br />tioieat_in eize•ead number to insure eatety. =~':': ~'- ~^: <br />:Chutes ari Uadsd by head and gravity. • - .. .~•,.~~ ~~~ <br />IIzdsrgreund.treamiag Ye~done.by hand. 3tee1 Oats elr"•"`em= <br />ploysd and the traokage ie'18". gnege and 12~ T railes' ~ ~ ''• <br />Drainage ie natuxal. Sanitary eonditions are good aid `•"~~ <br />all eld timbers sad debris have been removed from daderground. <br />Yeatilation Ss improved through aeane •et s~i B-ine}i gitL <br />vsaized pipe and hooded etnok and oeaprsesed'ai'r`Jet."Tli~yea- <br />.tilatiea_le• fair and ae soon ae the upraise.ie,oomrleted wi1T~: <br />be euttioisat. Ro noxious gases are met with. <br />Candles sad oarbide lamps ere used for lighting under- <br />_ . . -,,:. <br />• •L .!. <br />. S T A T I 9 T.I C 3~ ~ ~~ <br />drees~:tonnage ,"not .given:;' • . .. .. - - ~ ~::~•.~;^ <br />. 'lioathly pxoduotion of ore,. none. . <br />' ~ •dvttfage assay .velui of ore~per~ tong $2C•: ~ . .. :.;,• :: <br />-Get-per ton traaapdrti~ig of ore. ~':-:: '' ..... _.~.- ~liC_ <br />Ceet. per.ton,treatment of orr:: ooaoeatratee,.~i60..~- °~~~ <br />-. ,,,...._ ,. emeltiaR~.~7.60. <br />~dteisge oost per month of power. X76. ~ - <br />" " timber. ~2b. <br />" " et~el~ ~~ <br />" n " _ . <br />" " oil. ~3. .. ~i <br />