Show c e E YOu OH HAm A F ISO Io ot OF COAl COAr MINIS In the earl early ot conI tic Ih only light ilK I of t ui I and andie Ie anti and this is the ac In ml at s preSent nt Old collIers othil 1111 till 11 you OU that they eon aln ala ri ui t th iii presence or of gie tour Inore till In thuir with a canull their with the tho laIty ty lam that they thes ran Ian always cr sr It ore off In Ii a f II v minutes hy by tanning with their coats roat lb Ih atOll on the ground nut flirt lit if harms harm wf way till tile gas Mas the root roof But miners II vry Irv different nt from what they r In the typical old colliers In tho those e days when U they did cUd take were Wrt only local and did little hArm beyond burning tae the cloth and skin ot of those thoe near In nUl these d days art often of ten means mean loam 1011 ot of hundreds of lives live and the wrecking ot 01 th the mine so 10 that thought maa many collieries tart still worked h ty naked light lIht either or small riI lampl the number I ii b broming less lell every year r ur ot of ml mine in specters being constantly directed to the adoption of safety lamps Hut the ordinary safety lamp give but a poor light rind it must nut be timed in any position much out of the vertical or it ut and more ver It Is not a lamp In Inthe the proper sense of the turm U any one of Ur forms will become red hot and If it Is exposed to a cur reich of an explosIve tot a time Hence great efforts have been made to develop a portable electric lamp which shall take the place of tire Present safety at the face of the coal and In those parts of the mine where It Is not considered to Use lamps from the ordinary P in th for September |