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•ne. e,usi ~, ns;nu pyacione-, ie provided,. with guard. rails and the::<r <br />~~;;ehaftie,;aecurad-.by pillar~of graund.upoa eachside <br />euffioiant to insure eatetq <br />All winsee or mill~holee-are:not eovered or surrounded with guard <br />The shaft ie not being sunk at this time <br />Main opening edit or tunnel The,breaet,;of the Aooeevelt Tunnel <br />de 3200 feat from Shaft No. 1 and sll material ie;hodeted <br />thni;thde;ahatt from the tunnel. The present langth'of <br />_~the_tunnel ie,17725 feet and the amount,of water -.running <br />thru the tunnel ie.11590.ga1, per,minute <br />i Number ot,,faet;ol the•6tandard:TunneL in E1 Paeo Ground 1255 ' <br />n n: ,;n _n n ~,E1;:Paeo Tunnel •" n n n 1825 <br />" " II, Aooeevelt Tunna~.,, n,• ° n :. 2680 <br />MINE METHODS <br />Method of ;o re axtraotioa.ie dritting;and overhand etaping <br />Hachine,.prl~le;a;e~employed, the eame_baing.Naugh, Leynor <br />and Jackhmwere ~ ~ - <br />TIN.BE.RIltO <br />Method employed Stulle and lagging, tho same being autti- <br />;olent exoept in the;old workings .. <br />Charaoter of,timbero Se Aed and Rhite.6pruce prepared by hand <br />Condition o! timbers era fair exoept in the old workings <br />)Iature of londirig ohutee employed A31 ohutee aro Soadad by <br />gravity ' <br />.. ,• Q N D E A G A O U N D T R A M I( I N,0 <br />Byetem employed Oars era loaded from ohutee and by hand !n <br />• drifts and•run by hand - <br />f?aeoription ai oars -r ,Truax typo one.ton aapaaity <br />'l;raokage Se-8 and 12 ab T rail and 18n guage ' <br />DAAI.NA'OE.. .. ' <br />Amount of water dealt with d» gals. per minute Average 11500 <br />System employed The Roooevelt Drainage Tunnol .. <br />,,~ .,~ V E.N T I L A T I O N <br />System emp~oyea Qonneotfons on all levole with several shafts <br />exoept. the 7th lsvol of No. 2 Shaft <br />