MINEBK00120

• County: Clear Creek
• Volume: 7
• Document: Inspectr
• Suffix: C

MINING AND MINE METHODS. '~
s G1cClelland tumrel ttnnuth of which in $ mile ea^,t of Dumont ron the ~I
uth dine of Glaa1',Creek an Sur•I1o .14f,71A Century lode. I
urse S.12°30'F,.3GO0 ft.to breast. ~ ", l
. '. i li ~i'~.
ze lU'XlT.' for the first ].lU ft.e;hick is tiribered ciith arch tunnel. sets i::'
I
,enee II$~'X£ie' to breast with vrater box 15°>:24" under track.
tree tracY,n for first 110 ft.thence double trnek. '~~'Li'.~
rocs cut tunnel object be.irg to cut 4'reeland vein tit estimtted distance II i,
C 5012 ft.prom portal of tunnel. ~ I~~
!I
ne tunnel is nnm being driven b>' contn•act using t}tree drills on the
n~ three :i" Leyners using air at 12R'.= pressure i,
t and
3 .,er can
roast-one } $ ~I ~, I
II il~ i
air line for first 2500 Ct.thence 5° t,o breast.
I
'he tunnel set method of timbering in employed using; r'ed spruce.
'ranvuing donr. in 300Q'r steel nnrs using natle trains. Trackage ?.U" guage ~~ I~
tnd 2Ft"' rail. ;I~ '~.',''
~I
i ~
i1
)rainnge natural.
i ~ li ~
/entil[ttion-Cnnnersvillr. hl.ower exhausting thrnu~h 15° air 11ne.CUpaclty I
~', I
fiUO0 cu.ft.per.mi note. I'
Sanitary cond i.tions-Gnnd.
III
Underground ].fight inii-nandl es• ~I
i ,.ill ,