MINEBK01143

• County: Boulder
• Volume: 16
• Document: Inspectr
• Suffix: A

Herala - b.
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gZHI•IIG do• •MIBE METHODS-Oeatla.
The rtste a~di`ef signals aad.pnll balls are employed.
The bell line is ue-quart or iaeh twist wire.ia geed osadit-
iea. The oedo ef.sigaals la preperly,pestod in ho engine ~.
• roes, at the oellar •f the shaft ud at osoh lsv~l statisa.
~ Persons sre•prehibited Yrea riding en leaded buoket^
ud z• persus are peraittod~te rido ia.tho buoket.
•Tho skid way is three-oeraersd timbers is good ceaditi
'the level stetieae are net previdod with pauage-way around
•the working shaft aer previded with guard rails. The shaft is
scoured es each side with pillars of ground suffioieat to i
-~ I~
oeoure safety. ',
The=asthed empUyed for ere extraction is evsrhud and
underhand stopiag and drifting. Only single hand_drilliag is
done. ,,. i
Stnll^ covered with lagging is the method eapleyed for
tiabsriag. The timbers are prepared by hand from pine, are in!
i
geed condition sad-sufficient in size and number.te secure ;~
safoty.
Chutos are Uaded by bend sad gravity:
IIadergreuad tramming is done by head. Steo-l.buokets. ud!
mooed trellios ea a trackage of 16" gunge end 8~ T rails are.
'~ used.
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Only s small ameuat.•f-orator bar to .be.doalt with null.
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thi^ is easily handled by moans e2 a barrel. ventilation is ~
natural, geed and sufficient. Sanitary conditions are. good
ud all old timbers and dsbri^ hays been removed from under-
grouad. _ ._
- Tho~ihaft.is net..divided into two compartments but 1s ~
•gnippoi with .a good sad rate ladders. The ladder-way has
ludiags 60'•.apart and oentains.ain pipes.. ~
Guiles are used ter li ti
gh ng.undorground. ~
' ~ ;, Aa ataitioaal• e~eet0i>ha; prsvidod through the upraiso• from
~. ~~' the 1b0-ft. level t• the 80-ft. level.
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