MINEBK01081

• County: Hinsdale
• Volume: 15
• Document: Inspectr
• Suffix: A

3"l3
Sunflower -4,
MINING, 2c ES I N F IS E T ]i O D S, Contin.-
at the present time is running the main.tunuel ahead so as
to get ender the shaft and there vrill be an upraise m¢de to
connect vritlr said shaft, a distance of 200 feet.
The method of ore extraction is over hand stoPing and
drifting with air drills, Ingersoll drills being used.
The method of timbering is stul'_s and square sots
covered vritir lagging and are sufficieht to secure safety. The
timbers are pine and spruce prepared by ]rand. Under ground
trarmnixig is done by trend. Steel cars nre used far tramming.
Chutes are loaded by hand and by gracity.
t. i The systom of ventilation is partly natural assisted
~ by a fan. All ol~htimbers have been removed from under
~~ I ground and the sanitary conditions are good.
Candles are use~,for lighting under ground.
nc
' Tkra mino has only ono exit 4t the present timo. There
ror~
are no buildings near entranco to t;unucl, The shaft is
divided into two compartments vrith a good manway, ono s14e
witk: Js.dders with landings 20 feet apart.
S T A T I S T I C S.
':oral nutnber of feet in shafts, 260. Cost per foot ypIO,
n n u n n drii'tis, I400. " " " ;pI2.
n u u u u Cr06nCUtn, 500. u n u ;CIO.
~~ ~~ ~~ ~~ ~~ developmont work, 2I60.
Cost of povrder, IGF/ per pound,
i Coat of tranaportYrtr>, supplios, apI0.0U per ton.
Averugo auuay v41uc or oro, 25.00 Per ton.
:!en bmployed,
ii I m40hir10 drill man, .Fr4,00 for 6 hour shift,
~~, I maohina helper, ,p0.50 " "
u ~i u u
2 tranunofs, ~f3.00
! I 14b0 ref, tp3.00 ° ° °
I engineer, ~p4.00 " " "~ "