1900 - Coalmininghistorypa.org

No. 11. FOURTH BITUMINOUS DISTRICT. 445
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measured on the return, 46,200 cubic feet of air per minute, the
fan making J 80 revolutions per minute. A new airway is, however,
being driven, which will, when completed, improve conditions very
much.
Eureka Slope.—The ventilation at face of the workings was not
vigorous enough, owing to the resistance the furnace has to overcome,
but a new airway is now being driven which will shorten the
course of the air current and thereby reduce the friction. Other conditions
were good.
Dagus No. 3.— I
have found this mine in good condition on each
of my visits. I measured a volume of 29,400 cubic feet of air in
circulation, which was reasonably well conducted to face of the
workings, and the mine was very well drained.
A new opening is being
made into (lie coal on dip side of present workings, where the tail
rope system of haulage will be used in place of mule power.
Clarion No. 27.—This mine was in good condition generally. A
volume of 48,000 cubic feet of air was circulating around the workings,
produced by two furnaces.
Clarion No. 29.—The condition of this mine was satisfactory.
volume of 40,250 cubic feet of air being in circulation; the mine was
well drained.
West Clarion.—The mining is being done by electricity, and the
Jeffrey chain cutter type of machine is in use. A system of mining
is adopted whereby the pillars can also be very successfully removed
by the machine, which works admirably.
1 measured a volume of 31,500 cubic feet on the return, which was
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being conveyed in quantities sufficient to meet requirements. The
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mine was well drained.
West Clarion No. 3.—This mine was found in good condition generally.
A volume of 43,200 cubic feet of air was measured on my
last visit, produced by a Champion fan operated by electricity, and
conveyed to face of workings in four separate currents. The mine
was well drained.
Rattlesnake Run Mine.—This mine was opened during the year by
Messrs. Bond & Beadle, who operated it for a very short time, and
it was then closed for a few months. Finally it was leased by the
North Western Mining and Exchange Company, and has since been
operated by said company. The condition on my last visit was fair.
Mines of the Shaw 7 mut Mining Company.
The mines of this company are located in Elk county, and have
been operated very steadily during the greater part of the year.
They are as follows: Mead Run, Nos, 2 and 4, Shawmut, Nos, 1, 2, 3.
4, 5, 0, 7, 8, 9 and 10.