1900 - Coalmininghistorypa.org

404 REPORT OF THE BUREAU OF MINES. Off. Doc.
Mines Located on the Low Grade Division and Sligo Branch of the
Buffalo and Allegheny Valley Railroad.
The ten mines in this division of my district have all
business during the year.
done a good
I found the Oak Ridge No. 5, Carrier, Avoudale and Diamond
mines in good condition both in regard to ventilation and drainage.
At Keystone No. 2, and Cherry Run mines, although there was a
lawful volume of air being produced at each, the current was
not strong enough at the face of the workings. The drainage in
these mines was fair. The ventilation and drainage in No. 2 Fairmount
mine were good, but I found the inner workings of Fairniount
Nos. 1 and 4 mines inadequately ventilated, and although the old
fans had been replaced by fans of larger dimensions during the
year, yet little if any improvement in quantity or quality of air had
been accomplished. However, other improvements are going on
®o that the lawful quantity of air can be had at the face of the workings
as well as at the inlets and outlets of the mine.
Mines Situated in the Reynolds ville Region, Jefferson County.
The mines in
this region have been operated very steadily during
the year.
At the Sherwood, Maplewood, Virginia, Rathmel and Bloomington
mines I found a lawful quantity of air circulating in the workings;
also the drainage was reasonably good. While I found a lawful
quantity of air in circulation in the Hamilton mine it was being
conducted in a single current, which was against the requirements of
the law; however, immediately after my last visit lawful splits were
made. The mine otherwise was in very fair condition. For Soldier
Nos. 1 and 2 mines I measured 102,000 cubic feet of air per minute,
with the fan running at 65 revolutions, and water guage one and
six-tenth inches. Although this was a lawful volume of air being
produced at the inlet, it was not large enough to send a lawful quantity
to the face of the inner workings. The company had sunk an
outlet shaft near the face of No. 2 mine workings. At the bottom
of this shaft one six foot diameter fan has been erected to assist the
big fan in producing sufficient air for the mine.
Owing to the coal
in these two mines being mined by coal cutting machinery and so
much powder being used, larger volumes of air will be required to
ventilate them properly.
Mines Situated in
Beaver and Lawrence Counties.
The mines Beaver, Excelsior No. 3, Rock Point, Thompson Run,
Clayton, State Line, Sterling and Butts Cannel, were all operated