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n: <br />-3- <br />,SIN IN s . <br />Incline shaft 640 feet <br />Two Brothers tunnel 2700 ^ <br />P 11 cry., i~ c~*ractod by machine drills. Red spr':ce and pine <br />ti^~bers in the rough are usad in stalls and laEeing end area <br />`~ oocd condition. _lan'r: chutes. ;icrse prn;ar fcr underground <br />I <br />framing. Iron cars. 16 lb. T rail, la in. gases. Trolley is ~ <br />operated by hand power is used fur taking men to and from <br />work. Tha ventilatica is by e:liwust blowsy and is saffici~nt. <br />Shaft is di-•ided onto twc compartments, wi`h ladder safe, sQ- <br />cure and accessible. The tunnel has a socor.d opening thro•zgh <br />shaft to the surface, readily accoss'_ble tc n,:.n7~,~pa. TJn- <br />dergronnd system of .lighting, electric and candles. <br /> <br />i $1'~'aT'1 ST ICS. <br />, <br /> Evora~e tonnage per mo. C00 <br />'~ Tota7. no feet in shaft 64J, cost per ft. ,;~25 <br />~' „ " „ tunnels 2700, „ x,20 <br /> •' '• " „ levels £300, „ „ vr0 ' <br />f~'i <br />' ':ctal f eet i.^. Jevelopmant 4140. <br />' <br />; <br />i F.verare no. men employed for y ear, 3:, <br />~' Cost of feel her ton ;jG.5U <br />~I'j <br />~•~ Averare cost per mo. r~300. <br />;~ Cest o^ timber oer in .17 <br />a: <br />a <br />H' j E•,er~~C c0 st per ¢io ~ 100 <br />Sr <br />n' Cost of powder per lb 14 <br /> . <br /> <br />i Averare cost per mo :x;300 ' <br />~~ b~era?e assay valae of ore per ton a12 <br />f< <br />(i <br />Cost pr <br />y ton o° minine <br />~2.?.5 <br />1i Cost " " transporting ore .75 ~~ <br />: <br />~j milling ore 1.5U I <br />~_' Send blanks to A. :ie. ."+elles, 7 52 Eq•iitable Eldg. , Lenver, Colo. <br />N: <br />~,_ i <br /> <br />t: <br />i <br />i <br />