MINEBK00576

• County: Boulder
• Volume: 10
• Document: Inspectr
• Suffix: A

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-~ The ore treatment is by concentrating, a:~algametion and smelting,
;~;:~, and is tr9eced in the company's amelr-ameting emd concentrating
e'
mill of 25 ton capacity, located on sold 'run, 1~2 mile from
mine.
ji
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i ~ F~lOSI'?ES.
rorty per cent Giant German fuse, wooden tamping bars. Dame
ponder n_oazine, covered with sheet iron, located 60 feet
frcm blacksmith shop, and contains an a••erage of 500 lbs. of
powder.
biIEIN" .
~, The mein shaft is 600 feet
'I Contains in levels ~:2D0 ~~
"rJork is carried on at present in the 400 ft. level and in
the 70D ft. level. The hoietinJ* is by steam power, lifting
~I~ 80G lbs. The cable is 7~3 in roared steel wire. Needs to be
' t•.irned Has been in use one year. Safety hook and flat link
aaJ ::as not been changed :or foarteea months, but the mine
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~' has only operated one shift per day. No.9 galvanized wire
~;~~ bell line, axing state code.. 8 z 3 timber sltidway in good
condition, s°i*h pillars of round un each side of the shaft.
j~ There is a tunnel entering the mine at the 130 ft. level from
IY
.~ the sir"ace, and 400 feet in length. !11 ore is extracted by
'': both single and double and drilling. The timbering is of
pine and spruce, in the rough. in atolls sad square seta, and
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~~~ the condition o: the timbers is good. 'he underground tram-
inF, is by buckets and trolleys, 3 lb, T rail, 13 in. g `~i,a'''ge,
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~~ 6vera!'e runoant of water encountered, 4,200
(~til gallons in 24 hours.
II Handled by water barrel. The ventilation ie by connected aur-
j~` face openings and is sufficient, The shaft is partially divid-
a!
~.' ed into two compartments and is atixtda safe and accessible, con-
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tainina steam and water pipes. Ho landings between levels,
Winzes and manways connect the levels from the sixth level up
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and are all cribbed. The second ezit is thr'ouah the tunnel to
~ the aur''ece, and is readily accessible. The underground system
of lighting is by candles,