Show KARNS ARNS TUNNELING MACHINE EXHIBITED A number of ot local mine operators have e been Cn watching th tho Karns tunneling machine machine ma ma- machine chine operating in tho the rear of tho tim Newhouse Now New house use building Yest Yesterday a afternoon David Dald l aith and V. V Rico were among tho the spectators spectator The typo of ot tho the I machine now nOt nOton on exhibition is la one of th the tho I smaller r bores bore which is used mcd for drifts crosscuts mid and raises In mine mino development nt This drill dot dorT not cut out oct the full width of the tho drifts drift drifts but ea eases eH tho ground so flO that only half one tho regular amount of or powder Is r required to break the ground Tho The weight 0 of tills this drill log ling driving dri is 1000 pounds Weight of ut cutting heM head and shaft is pounds pound H and tho the power required is fifteen horse hor under umer a pressure of pounds of team steam It Is operated tl with ri a little giant 3 31 air aJr engine ensine and in is easily handling tho the Karns machine nt at blows per Ier minute Twice the time present speed can n be used While tins tIlls machine has been given a tryout on all nn sorts of or rock this experiment expert expert- moot mont Is s being roads made with some Somo of tho tIle Little Cottonwood granite On next rues Tuesday ay afternoon a demonstration will be he made in the vacant lot on Exchange a pin piece re c and und Cactus street TIme The air all engine spoken of above Is built t. t to drive a inch 21 Inch drill but In Ic easily handling the tho Kirns arns machine at 2 0 blows per pcr minute with a u. pound lOO-pound stroke |