MINEBK00728

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

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' Hake-oYY - 5. _ _ .
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M .I H I B -G ~ M III E M E T H O D S- Contin.
are oottneoted by a man-way and this man-way is properly equip-
E- pad with safe and accessible ladders. The amount oY drifting
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done in aha3t Bo. 1 could not be ascertained.
i Electricity is used Yor hoisting and the men are raised
and lowered -with the hoisting mechinexY . A- load vreighing.1,000
is hoisted at one time Yor a distance oY 226' with a three-
~, quarters inch steel wits sable that has been in use. one year ..
~ and is in good oondition. A safety hook and ohain, fastened
~~ with olamps,rae employed and is in good, oondition. Material is
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• hoisted 3roa two levels.
,; The state code oP signals and pull bolls are employed.
~l:"~ The bell lino is one-quarter inoh twist wire, in good oondition
The oode oY signals and other notioes required are properly
III peoted in their reepeotive pleoos.
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,,!, The elsid-way 1s made oY 4" x 6" tiabore and is in good
oondition. Level, stations axe provided with passage-way arounfl
i the workittg shaft an8 guaxfl rails are also provido8 at the
levoi stations. The shaft is scoured on eaoh aide by pillars
~~ oP ground suYYioient to l.nsure safety. The shaft is not being
i jl~;! sun]:.
f~jj The aethod oY ore extraotion is overhand stoping and
i ~' drifting. {laugh and Sullivan maohino drills are employed and
same single hand drilling ie done.
' i 'Pimboring, ventilation and sanitary oonditions are goofl.
Ho noxious gases are net with. Ohutes.axe loaded by hand anfl
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gravity. b 3", 2-plunger, Elootrio pump, whioh is.run about-
',~ three hours daily,wil;h a 7.0 h.p. eleotrio motor, is used for
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!'~i, relieving the nine oY water. Underground tramming is flono by
~~~ hanfl and eteol.buoY.ots with woofl trol].l.es nro emp].oyofl on a
traokage oY LO" gunge ana 1?,~ T rails. Carbide lamps aro usofl
I~,!~ Yor lighting underground.
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