Reports of the Inspectors of Mines of the anthracite and bituminous ...

No. 12.] Seventh Bituminous District. 461
not to the same extent, however they bid fair to become so in the near future.
What the upshot of all this is g"oino- to be is unknown at present, but I
am fearful of the consequences that may result before the danger will be
leg-ally recognized. Quantity of air at the outlet, 44,000 feet per minute,
fairly distributed. The Brier Hill mine operated under the same management
is in pretty good order. They have sunk a shaft at the face of
the mine for drainage and ventilation, and a large number of pillars which
have been standing for some time for lack of facilities for removing the
water will now be taken out. There are several oil wells bored through
this mine. Quantity of air in circulation when last measured, 35,500 feet
per minute.
Mansfield and Erie.—Is in fair condition as regards ventilation, but
the drainage is not very good. Only about thirty men are employed.
Quantity of air, 7,500 feet per minute.
Boyd.—Is also in pretty good condition, all parts of the mine are rea-
sonably well ventilated. Quantity of air in circulation, 14,000 feet per
minute.
Oak Ridge.—At the time of my last visit the return airway was ob-
structed by water, causing nearly a complete stoppage of the air cur
rent, but I have since been informed that the obstruction is removed
and the ventilation much improved.
National was, when last visited, in reasonable order. Quantity of
air at the inlet when last measured was 10,000 feet per minute, and 5,000
feet at the face of the main entries, this quantity will need to be in-
creased in the wevy near future.
Star.—Is not in very good condition, the ventilation when last visited
was below the requirements, but they were making provision to improve
it by driving an airway to connect with the small furnace in the old mine,
near to wdiere they are working. Quantity of air in circulation, 7,600
feet per minute.
Willoio Grove.—When last visited the ventilation at the face of one or
two of the entries was slack, in other respects the conditions were favor-
able. Quantity of air passing in return airway, 32,500 feet per minute.
The Champion mine operated under the same management is a new
opening and its prospects are favorable, excepting that there are a great
number of oil wells to interfere with the w^ork and it will require skilful
work to keep clear of them all.
Laurel Hill No. 1.—The roadways as usual are wet and muddy, but
the ventilation Avhen last visited was in reasonablj^ good shape. Quan-
tity of air in circulation, 48,725 feet, but as there is plenty of reserve
power in the fan, this quantity can be increased at any time when
necessary.
Jumho Nos. 1 and 2.—I understand that a larger fan is to be placed
at the No. 1 mine and the fan in use at the present time taken to No. 2.
No. 1 is a largo mine and needs a large volume of air to keep the work-