MINEBK00207

• County: San Miguel
• Volume: 11
• Document: Inspectr
• Suffix: A

Liberty Bell - 7". .. -- .. , .
_._ _ Libert
jr'' ~_; M I& I N G &~ I 8 E M E•~T.H O D S- Contin.

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, The timber.shede, tramway, weight terminal and blacksmith
~ _,., and wi
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u shop adjacent to the mouth or the tunnE:I. Also the boarding ,

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house sad transSOxmer house. The ore binE3 and tram terminal are The la

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' connected by a.trestle'.
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a e _ add &OB:
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s i~o door has been placed at entrance of the tunnel as an ai,r
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~!!i! ' current
g4,es .Unti r the tnnael. .
: with s+
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The method or ore extraction is overhand atoping with-air 1'7
,
~w~
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msahines. mnrphy sloping Grille, Iagersol-SaTgent, and Temple
~ we11~ Tt

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dsii"ting drills are used', Some hand .drilling fa done. cut : A7
'

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1^he method or timbering is atIIl.LEl, set in hiteheE~~p~,~, in the u7

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t00t walla WitIl he8tt b08rd8 OA hanging walls 8nd braoea wI16Te 8nd elE
ia

~~~ needed._1'hese are sutTiehent to sec
ure sarety.
~,~ ~ The timbers are white and red spruce. prepared. by hand, sad
are is good condition'. Average

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1'he method or loading chutes is wooden-chute mouths with
Gross p
„t
stopper boards in slides.
Dotal a
mhe e~stem or. underground tra.nmmiztg 1s by mules, horses "
and electric locomotives. Tramming in the upper drirts is done "

` + by hand'. ,
; ~~
Electric, atoel oars, with a capacity ox :S/4 or a ton,
I.eadville t e
yP . and 5-ton, gable bottom, care are axed ror tram- Cost o
, miag. Host 0;

1`he traolcago is ltt" ana L4i' guage, and iL
' ~ and 24~ T silo. Mon e
mP~
Total trackage in pse~ 1ti~000 feet, with ewitoheo, etc'. 1ti
d Goodly amount or water is 1n the mine but St oauooe no '4
lnconvenienae or labor ao drainage is through tno tunnel:/; 17
1'he I'~Pin6' Plant ooneista or one, •~ h.p.
elootria
m 3'J
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pp
p,

! rot 'che sump. end ono,a h.p'.,eleotrio putap ror the water oupply.
47
]lane are usca in all Plaoea where them is no natural b
ventilation. Tho ventilation le very goon and no aoxioue aai
gesso
era. mat with.
. 1
,ell old timbero have boen removed xram undox~rouud~arid.the ~ 7
sanitary oonditiaao are good.,
a
7'he laddor•way le provided with ease and aoooaolbie ladd.oxo,
i 2
u
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