MINEBK00123

• County: Gilpin
• Volume: 17
• Document: Inspectr
• Suffix: A

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Pittsburgh Eat:-4. -• ~• - ~ .
. .. - S'U~B:~`-A'•C:E P L:A:II T.-- Coatin.. .
shop and:ohanging-iooID aie all:under one-rooY:~Ho:.prot.eotion.
•againat Yiie de-Providod'. ~,:.. _. .. , _ rr
The-aoilar of~the. shaft. is oY: eufYiaient. height: to pre-
'., vent persons`from tiipping•and falling is the shaft and.is•aleo
provided with a good and°suYYiaient.door to prevent material.:
Yroa Yalling'in the shaft'while dumping. ...,. -,
- E S P L O S I V E S.
Dupont powder - 40f,: German.Insoloid'Yuee, b-% asps and.
wooden tamping bars are employed. Only about,lU~:oY,powder are
kept on hand'at one time and this ie stored-in a driY'C that,.is
situate 1b0' east oY where aotive work ie oarried on..HO devioe
Yor thawing powder is provided. as tho kind of powdor ueed,dooe
.-not harden exoopt in very oold weathor.'
M I H I II G & M 18 E M E T H O D S.
Tho gain opening Se a shaft 1b0! in depth,-cribbed with.
?.-iaoh plank ita entire flepth and divided }nto two aompartmente,
snob 4' x'4' in the olear,-and used for a ladder-way and buokot-
eray,reepeotively. Tha ladder-way ie oquipped with eafe,,,,eooure
and aoaeseible ladflore, oontains sir pipes and has landinCs not
to oroeefl 20' apart.
At a depth o~ 1b0' adrift Se run east 18!.and went 80'.
From the east drift a orose-out is run north 104'. Drifting has
boon florae from this and s oroes-out run west a dietanoe of BO'
anfl:eaet a disbanoe of 190'. Eighteen feat .from the lattor
oroeo-out nn upraise le boing made to tide surfaoe. This uprai'so
will be used for a main shaft as eoon~ss oompleted.
Aotive work ie oonfined to the upraise and retimbaring
oifl shaft where neoded. 'Phe upraise le timbered with 8" x 1'u"
square timbora:
An aflflitional exit is provided through a shalt 30' east
I, of the o1Q shafb elsish oonneote with the 160-ft 1eve1 in the