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<br />THE {iL'XXI~O.'\ I:J\'EH UI\'EHSlUX I'HUJl-:<;T
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<br />the tunnel through drill holes, knocking the drillers from their
<br />machines, The flow was estimated at 25,000,000 gallons in
<br />twenty-four hours, Accompanying the water was a heavy flow
<br />of "choke damp" (carbon dioxide), Because of the gas, water,
<br />and high temperatures, work had to be halted in this heading
<br />for about six months until a 680-foot ventilating shaft could
<br />be sunk. :.9
<br />
<br />Occasionally, flows of water heated by slacking of shale
<br />would be encountered. raising the temperature in the tunnel
<br />to an uncomfortable level averaging 85 degrees,'" The heat
<br />became so unbearable at one point (over 90 degrees) that
<br />further work had to be delayed three months while a 400-foot
<br />ventilating shaft was constructed.61 Five hundred feet of ex-
<br />cavation went through a deposit of fossil clam shells, and spe-
<br />cial timbering methods had to be devised to prevcnt cave-ins
<br />here," In another spot where the granite roof of the tunnel
<br />began to cave in, the hole was filled with thousands of bales
<br />of hay."J
<br />
<br />When the project was about half completed, a section of
<br />tunnel already shored gave way, cutting off a number of men
<br />in one of the headings.G~ Fortunately. an air pipe was buried
<br />with the workers, and for 72 hours air was pumped in to the
<br />men while res.
<br />cuers labored in
<br />t h r e e - minute
<br />shifts on a tem-
<br />porary opening.
<br />Constantly the
<br />entombed men
<br />implored the i r
<br />rescuers to hur-
<br />ry, Those first
<br />reached took their
<br />turns at the shov-
<br />els to extricate
<br />their companions.
<br />Six men perished
<br />in their particu-
<br />
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<br />K
<br />
<br />E,,\~T l'IIT1TAL. Rl"l'jf'tl" III UI'I'il'u's
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<br />~l'hlll'llllln. "1'. hr.. 1;~'; ,. :-:. Ht'dam8lion ~t'r\"h't'. I1tIl Annl{(ll Rf'1mrt pI
<br />th" R,'rltlf/lnti,m R"r!'i,"'. I!HI/;-I!HJ': ll~07). 7!<_
<br />-I'. ~. IU.damatlon ~I'rvle... 5th .411'11101 Re-port. op. hi.. 109.
<br />61 AIl...rt \\'Uhdm, "The Grf>l:l.t Gunnison IrrigatIon Proje<:t," Scientific ~tt11er.
<br />inln SUPJllcmf.'t1t, \'01. 68, Xo, Ij59 (1909), 184.
<br />IQ [bitt, Chapman. tip. !'it.. 17'.
<br />A LIllian H. Hrh:-harn. el,/untll" 7'rnn'lofc (I'",nn'r, 1'38). 134.
<br />., This al'c!-.h'nt I;; de"crlb..<1 in 8 numllt'r or rt'p.ort:; and nf'w~pal't'r article;;,
<br />with <'INa11.. ,-arylnj:;. a" u~ual. Am.mg- the m,;;t aC('(lUntlO art' thO"''' in ]'ao:\;,.
<br />"p. {'it., '327: t._ ~. Go-'ol"/.:I..a1 ~Uf\"'Y. .th .Il1nlwl Hqwrt, vp. {'it.. II!': 1'. :-;.
<br />G~olOl:"lcal ~ur\'ey. Uth .Innunl RqlQrt of the L'.,S. Geologic(ll Sllrrcy (1!l051.
<br />~61-2G:? At'Cortlin!{ to an a{'count in the Colorado Springs Ga;;:clt" tor ~Ia}" 31.
<br />1!l05. 25 workers wt're t>ntombed a!tt'r a ca\"e..{n due to s('('page towards the
<br />Cedar Cre..k ..nd or the lunne!. "~1~' Go.l, W(O are ~one." un", man rt'porteo.l1y
<br />"hout""l a!! he WR": s.ruck by lhe j')aH of air frt.m the collal)"t' or tht" tunol'1 r.Kl(
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