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

No. 10. FOURTH BITUMINOUS DISTRICT. 331
1, 1897, the present capacity being 1,400 tons per day, A complete
Jeffrey electric mining plant was installed at the mine during the
past summer and the machines, live in number, were started October
1. The equipment of the plant is as follows: One 225 horse power
Ball automatic engine, two 125 horse power boilers, one 50 K. W.
generator, made by the Ridgway Dynamo and Engine Company.
The plant conmienced with five machines, which have since been increase
to eight, and has a capacity for twelve machines. The
building is
of brick, with iron truss roof and corrugated iron covering.
The plant is said by experts to be one of the most complete
mining machine plants in the country, while the results obtained from
the machines compare favorably with the results obtained from the
same height of coal anywhere. The coal is three feet thick, and the
lower bench has a streak of bony coal in it which turns into slate at
times and has no parting with the coal. The machines generally cut
above or below this bony streak when it is possible, but at times they
cut through it successfully, the only effect being a more frequent
change of bits.
Tioga County Mines.
Gurnee Mines.—Were exhausted during the year.
Antrim No. 1.—Has not been in operation during the year.
Antrim No. 5.—This mine, as usual, is in good condition. All
parts of the workings were, at the time of my last visit, well supplied
with fresh air.
Quantity of air passing at the outlet 62,000 cubic feet
per minute.
Gardner Mine.—This is a new mine opened during the year.
Bear Run.—The general condition of this mine was good, but some
of the details in matters pertaining to the ventilation need closer attention.
I observed that some of the doors were left standing open
much longer than was necessary. I called the attention of those in
authority to the condition of the mine, with the result, as I have been
informed that the ventilation has since been verj' much improved.
Arnot Nos. 3 and 5.—No. 3 mine was found in good condition.
No. 5.—This mine, at date of my last visit, was in a very satisfactory
condition. A portion of the workings are under water, for which
reason they are not being operated at present, but no danger whatever
exists to the men working in other parts of the mine from this
source. The ventilation and drainage in all the present working
parts of the mine were in fair condition at the date of my last exami
nation.
Fall Brook No. 2.—The general conditions of tliis
mine are very
good. The volume of air passing at the inlet per minute was 64,000
cubic feet, which was well distributed throughout the workings.