Reports of the Inspectors of Mines of the anthracite coal regions of ...

INSPECTORS OF MINES. 159
Ventilation.—Slope No. 2 is ventilated bj exhaust steam from the pump,
the traveling-way being the intake and the pump-way the outlet. Slope
No. 6 is ventilated l-y a furnace built in the outlet, the air in this work has
been very weak, but an air-hole is now being driven through about 50 feet
of rock to the surface. When this hole is through it will undoubtedly be
a blessing to the miner- and a credit to the superintendent. The air has
been measured and reported for month of December, as follows: 10,500
cubic feet per minute in the face of the ibur gangways. Men employed,
141 ;
mules, 13.
Machinery.—They use 3 hoisting engines of 1 80-horse power, 2 breaker
engines of 60-horse power, 1 pumping engine of 90-horse power, total number
of engines, 6 ; aggregate horse power, 330. They have 20 boilers in
use—cleaned, examined and reported safe and in good condition. They
have steam gauges on their boileis to indicate the pressure of steam in the
boiler, and safety-valve on each set of boilers. They have no brake on
their hoisting drum, nor speaking tubes. Tliey do not permit persons to
ride on cars in the slope. There is a good man-way for men to travel to
and from their work. These works have imr3roved wonderfully since the
present firm have taken possession, and are still improving. They have a
breaker capacity of 600 tons of coal per day.
E. B. Leisenring, superintendent; Owen R. Evans, mine boss; George
Spencer, outside foreiTian.
Room Rux M)n.-:s, Nesquehoning, Carbon County.
Situated five miles west of Mauch Chunk, on the estate of the L. C. and
N. Co., and operated b}^ the Lehigh and Wilkesbarre coal company.
Shaft, No. 1.—Depth, 310 feet ; elevation above tide at top of shaft, 1,075
feet ; at bottom, 165 feet. The west gangway has been driven 2,811 feet,
and has been discontinued. The Avork done at present is principally drawing
out the loose coal. This part of the mine produces great quantity of
carburetted hydrogen gas or fire-damp. There are about eight men working
by the light of the safety-lamps in this gangway. The}'^ are strictly
forbidden to use naked lights in this part of the workings. The east gangway
has been driven 3,200 feet, and will connect with the old workings of
Ilackleburney. A tunnel has been driven a distance of 339 feet, intended
to cut the vertical vein, but proved to be about 40 feet too low to cut the
basin, so a balance plane, of 100 feet in length, was driven through the
rock, at an angle of about 25^, cutting the vein in about 18 feet of good
coal. The east gangway has been driven 2,700 feet, and continues to be
worked in good coal.
Ventilation.—The ventilating of the 50-feet is produced by a 12 feet diameter
fan, the shaft being the intake ;
thence through the gangway to the
face of the working and back to the fan through the return air-way. Measurements
of air at the fiice of the 50-feet gangway, taken October 14 by
the inspector, 0,480 cubic feet ; men employed, 8; outside barometer, 28.40;
inside barijmeter at face of gangway, 23.05 ; difference. .35 ; thermometer,
— . The ventilation in the vertical is tolerable, produced by a furnace
erected in the old or No. 1 tunnel. I have reijuested the superintendent to
cause a greater quantity of air to circulate through this part of the mine.
TcNNSL, No. 2.—Elevation above tide at mouth of tunnel, 1,049 feet;
length of tunnel to Red Ash vein, 1,420 feet, cutting the Mammoth or E
and the Red Ash veins on the north dip. The west gangway has been
driven 1,468 feet. At the lieading the vein is entirely pinched out. They
have followed the smooth of the top rock for about 300 feet. At this point
on the surface the vein proves good, which is very encouraging for the pro^-