MINEBK00683

• County: Gilpin
• Volume: 12
• Document: Inspectr
• Suffix: A

arts
nal-
e~l.-
tt
pe.
Celmbia - 4'. ~ - -
EZPI,092YE9-Centii.
Ssea the portal oY the tnnYel. Candles nre stored eith the peeQer.
The a7erare aaeunt •2 6asolSne in stovers is bE rallcne. This is
stored aenr the enCine in the txaxel.
The de~ioe Yer thawing powder is a eeodan boa heated With
oaadles.

i[ I II I II a & 3d I HE M E T H O D S.
The aaia epeniae 18 the Columbia Tunnel. This tunnel ie
1.600' in length sad hen been driven the extire dietaxoe •x the
Cel>abia Teia. it is 4' a 6~* in the olear~ driven sn a uniPen
~ral• •2 about 176. The first 7b' is tiabered with poste axd
caps. 8tnlls oarered eith latg].ne are need is the stepos. Cea-
siierable stepixe has beex done in the tunnel. At a diataxae
•t 800' area the portal a shaft le soak tea depth •f 130'. At
the bcttea •Y this shaft tee drifts hale been run, the east drift
beiar is 40' sad the west drift b0'. Beth •f these drifts are
being srtealed ud seas stepiag is carried on in the east drift.
Ac ether work is •arriai en at this tile.
Saaereue shaft^ bare been sunk ca the Celuabia veix sold
cc~eral •n the ether relax in this rrenp. These shaite nary Sa
depth area 10' t• 300' but as all •f they are is eery peer ooa-
dltiea sad abaadenea ao report cal be then npox thest.
At a eclat tfb0' area the portal a1c the tunnel oexxsota
with the 8eary shalt to the cariaoe. This shaft i• S00'. iscp~
le kept is ~eod oeaditiea axd egxipped with safe, scours axd
aooeasi~le ladders. This shalt is Woad Ter air and as aldit-
ieaal snit ier the eapleyee.
The shaft conic 1a the tuaxel ie dlridsd late tw• oar
pnrtaextr •xe •r which is used far a bucket-way and the ether
ter a lnlder-way. Each oeapartaext is S~' x ~' Sa the olear.
Ths lallsr-way oeatslae air pleas. 1• proper;~ egaippal with
sore and aeeessible lallers sad has laxdixss b0' apart.
. Ths atethcd eapleyed ter leiatiag is taselias. A wslght
~;
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