Report of the Bureau of Mines of the Department of Internal Affairs of ...

412 REPORT OF THE INSPECTORS OF MINES. Off. Doc.
Essen No. 1.—Was in reasonably good condition wlu-n last examined,
bnt the air currents were not conveyed to the face of the
workings quite as well as on former visits. Quantity of air at outlet,
70,000 cubic feet per minute. The mine is worked on the double entry
system. The coal is mined by hand labor and is hauled from the
interior of the mine to the bottom of the slope by the head and tail
rope system. The ventilation is produced by a 20-foot fan of the
Guibal type.
Beadling.—The condition of this mine is very unsatisfactory. The
airways are in poor condition, which was caused mainly by a squeeze,
which destroyed several of the butt entries and partially closed some
of the airways. A 25 foot Vulcan fan is used to produce the ventilation.
This fan, when the last air measurement Avas taken, w^as passing
25,200 cubic feet of air per minute. The condition of the airways
and the mine in general can readily be deduced from the above figures.
At the present time, they are opening up entries and airways into a
new coal field and we may, perhaps, expect an improvement in the
condition of the mine in the near future. The coal is undercut by the
Harrison type of machine, and is hauled by animal poAver.
Mines on the Pittsburgh and Lake Erie Railroad.
Moon Kun.—This is an extensive operation. The coal tield is being
developed on the treble entry system. The coal is undercut by the
Harrison type of macliine, which have compressed air for their motive
power. Two electric locomotives are used to haul the coal from the
interior of the mine to the tipple. Both fan and furnace power are
used to produce the ventilation. Total quantity of air passing at
the outlets,
when last measured, 114,500 cubic feet per minute, and
the conditions of the workings were satisfactory, excepting in two or
tliree entries in No. 1 section, where the air volume was below the
re(]uirements.
Dixon.^—When last inspected, the fan was running slowly and the
air currents were sluggish in one or two of the entries.
(Quantity of
air passing at the outlet, 20,000 cubic feet per minute, but the fan
will produce 100,000 cubic feet if necessary. The mine is worked on
the double entry system. The coal is undermined by the Harrison
type of machine, and the hauling is done by the head and tail rope
system. A 10-foot single inlet ('ajx'll fan is used to produci* the ventilation.
Margei'um.—This mine was not in good condition when last examined.
I found every door in the mine pro])])ed ojten. with one exception.
workings.
ronscMjuently, very little air was found near the face of the
It is true that they were not running coal on that date, but
that was no excuse, for tliere were a number of miners at work making
coal ready, and the doors should have bei-n kept shut and the air