Show LONGER loner DANGER DAGER IN SHOOTING COAL eliric spark helps gas save miners lives ordinary soda da fountain gas gail and electricity may soon save cave 6 ag of lives by bi dothe deeds of cost coal literal til work of powder and dynamite retting getting tile the nat nations lons coal out of the lie harmless gas so BO w well ell and for this the quality it it 6 am wil various drinks Is just now ts s to favorable showing in A 1139 in a hern bern 11 illinois mine lillne of the J IC ring ing CO coal at company at eldorado experimental conditions condition sl ere re u under er replace replacing ug dangerous explosives a early ell all of tile tons of coal united states nowadays 9 fled d in the loosened uLder underground ground by shots of oslee losice p planted canted in holes that have ben u drilled into tha coo coal I 1 face this factor in mini mining minitia tig annually erous rous lige ng in 1928 1025 deaths uses will many ay iy ases es in rill mines ties viere vi ere directly fe for or 80 and underground plo lons of raine mine gas and coal dust bolted cited usually by flames from powder rd d dyn dynamite attil te shots ired fired in the coal bled led more according accor dingo ito t the e cited states bureau of mines bin in addition to tho the clementou clement of dan br r the old method of shooting coal ws vs down mining operations 0 be ba laws prohibit faring base use most state K shots with boeri in a mine this dually bally has meant that expensive load machines capable of fast work ave ye been compelled to stand around lie le during parts parta of each day wat batting ting ng r the nights round of shots to loosen w tonnages ton nages put but during the latter part of no imber alber and the early days of bece mr the mine at eldorado ill ha lias eed en proving out the new aei method tr bonc acid gas or i compressed to 0 small steel byll cylinders n ders at ab about olit pounds per square inch has hae ten en slipped into shot holes bored in lie e coal by swift electric drills drilla and aped tight wires leading from ese cartridges are led off at a Us its since e they tire are touched to a mine volley ey wire or otherwise supplied alth ith electric current the gas inside be e cartridges heated by electricity berates eDe rates terrific expansive pressure nd d the wall of coal Is suddenly blown own but without al a name flame As much 42 tons have been loosened by OUR one artridge rt ridge this kind of mine shooting Is ex acted to proceed at any hour of the ity ay while men all through the work gs go ahead safely with their labor metric loading machinery will thus aye are an opportunity to id do its full rylee in getting out huge tonnages tou ton nages eagly to reduce the ille colit cost of coal |