MINEBK00920

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

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ORE OCCURR/(NOE.
The ore of the distriot consists of sulphides of lead,
~zina and iron, /of ten aaoompanied by barite (heavy spar) and
which carry Silver values probably in the form of eulphurettee.
~ The ore ocoure at the contact oP the dolomite lime with the
(blue lima: This aontaot stands at an angle of BO degrees from
the horizontal and the strike would be northeast and southwest.
The foot wall of the ore bodies is always therefore
dolomite, which stands well, while the hanging wall is a lime
shale that is exceedingly hard to hold by any eyeterq of
timbering. The largest pay ore shoots occur where.thie contact
is cut by cross faultings.
DEVELOPMENT.
Hope Tunnel 6'x 7' in olear, 6200 ft. long.
Besides the b200 feet of main tunnel there is about 360
feet of drifting done and about 80 feet of raising.
METHOD OF MINING AND TI]ABERING.
The rook ie drilled by maohine and trammed to tho eurfaoe
by hand in the regulation mine oar. The tunnel is timbered
to.eolid formation only with 10' x 10" framed tunnel sate.
MINE EQUIPMENT.
V7ater Seyner Drill,
Air line (oannected with euatian fan driven with water from
the mine)
Traok (4000 Peet 12 lb. rail and 1200 feet 8 lb. rail)
Oar (ordinary mine oar)
SURFACE EQUIPMENT.
Engine room,
Boarding house,
Hunk house,
No building ovor mouth of tunnel.
80 H.P. Hailer (size 68 inohes by 18 feet) using tunnel
wator and oarrying 70 lbs. preesura.
One 4 drill oompressor,
Blaokemith shop (equippod with hand toold),
Powdsr stored in underground magazine, about 1000 lbs.
oarried on hand.
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