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

402 REPORT OF THE INSPECTORS OF MINES. Off. Doc.
above figures speak well for the fan ; it also shows that the mine airways
are in a very cramped condition.
At the Champion mine, an 11-foot single inlet Capell fan has been
erected.
DESCRIPTION OF MINES.
Mines on the Monongahela River.
Bellwood.—BoUi double and single entry systems of working are
in vogue at this mine. The coal is mined by hand labor, ventilation
produced by furnace power and the hauling is done by animal power.
At the time of my last visit, the condition of the workings was reasonably
good, excepting that the air curi*.Mit was rather sluggish in two
of the butt entries. Quantity of air i)assing at the outlets, 24,000
cubic feet per minute, and the air currents measured near the face of
the several butt entries, varied from 3,000 to 0,000 cubic feet per
minute.
Calhoun.—Was in good condition when last inspected. Quantity of
air passing at outlet, 10,000 cubic feet per minute. There were but
nine men employed inside.
Street's Run.—The general condition of this mine was also satisfactory
when last examined.
Quantity of air passing near the face
of the workings, about 4,000 cubic feet per minute in each butt entry,
and 12,800 cubic feet was passing at the furnace upcast shaft. The
coal is mined b}^ hand labor and hauled from the mine by animal
power.
Hay's Street Run Nos. 2 and 3.—^Vhen last inspected, I
observed
that some of the ventilating doors were left standing open longer than
was necessary, by the drivers. Some of the room pillars were not cut
through at the proper distance, and two of the entries were being
driven beyond the legal distance, in advance of the air current.
other conditions were satisfactory. Quantity of air measured near
the face of the workings varied from 4,000 to 12,000 cubic feet in the
minute was passing
different butt entries, and 60,000 cubic feet ])er
at the furnace outlet. The mine is worked on the double entry system.
The coal is iniiied by hand labor and it is hauled from the
mine by animal power.
Walton.—This mine is worked on the double entry system. The
coal is mined by hand labor. Haulage is done by the head and tail
rope method. Ventihition is i)roduced by a 12-foot fan of the Guibal
type. When last visit was made I noticed that in one or two of tlie
butt entries, in No. 1 section, the ventilation was sluggish and in No.
2 section there were too many men woiking in the same air curivnt.
All other conditions were favorable. (Quantity of air jKissing in the
different entries varied from :{,000 to l.^),000 cubic feet i)er iniiiulr, and
52 000 cubic feet was passing at the outlet.
All