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<br /> '.f I Id E A Id D ?f I N E '..{ E T H 0 D S f Contiirsed. J
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<br /> The propar±~a is developed by a tassel S x IOt 3,000 it in langth,
<br />'9~~ a raise ~ x 7, 800 ft high, and one under ground shaft 4 x 4 - 1~2,
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<br />lpp, f: d^ ig h,~7~ ha.~ b~ dri._ °^~ o~
<br />°p,~ ,vn ail, v . v 621ra1 iIl lUL~4(1..
<br /> :"!:e b7.ac'.-amith shop is ;0 ft n. of tunnel portal,assay office
<br /> 3G~J ft n.
<br /> ;2t= tunnel is provided •aith _e,ood and sttffiriant cioors at a reas-
<br /> enable distance faom entrance to prevent adwisaion of noxious fumes
<br />i ~ or Fasen from sold buildings,should fire Orrllr, Doors eon he
<br /> op=_ratad from vrithout,
<br />I the nethod of nre extraction Ls that of over hand ntopiny,•rrith
<br /> Hardzocg machine drills, ningln hand drilling is also »mplaynd.
<br />(~ 'i7te t•iraberi.n~ mer,},ocl in that of squarn sets and stulls,and in
<br /> ::ufficiout,
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<br /> :ne timber:: used are v+hitn spntcr. prnparod by hood at mina,
<br />~ condition of tLmbers Ln good,
<br /> '.'ho loadinr, chutes empJ.oyed nre eonntruotocl of 3 in. plaz;l: vrith
<br /> stem slide Patns,
<br /> Undnr ground traramin,; is dnna by ruiuual labor and hornn,uniug
<br /> r;tnel mine r.,,r~,
<br />Y "r•,r,,:c,f;;, J.;t Ln. 1'uure 11', J.h rni7..a,and ?.4 l,t, pungn rrnd ,i0 lb roils,
<br /> '!'ho vanti~lcctinn La natural and nur'fLnLnnt
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<br />oun gnsen am not
<br /> mar, ~~rit.}t, nnnit:rry r~onditJ.nne nre E;ood,
<br /> A11 old timi,ere }u,ve bond rnraovvd from under
<br /> ground vrorkingn
<br /> •,hnrnvar nnenanary.
<br /> "'}ia rtinP }ton n dnuhln exit Por vraplaynr,r,,bning onnnc,otnd by n rntno
<br />x=' wfcl, nl,fxir zunnol.
<br />d~ ~ ;St1t.s 1,rr, r•~~ndi7„ nnrnnnibin r,n etnpLoyenn
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<br /> I,it(htiiy; cinder
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<br />E~ vround In plent,•irat.y n7ld nntnliun,
<br />"+w~ ""M"a"W!"""M~Ab1Mw+~
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