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

No. 12.] Seventh Anthracite District. 255
bj' a small mine locomotive. A new j^lane has been erected for the pur-
pose of hoisting- this coal on to the head of breaker.
Enterprise Colliery.—A slope has been sunk on the underlying vein
for a distance of 100 yards. The coal at the foot of this slope is of good
quality, the vein being- eleven feet thick. A single engine has been
erected to hoist from above slope. The track has been g-raded and laid
from head of slope to breaker. A new steam pump has been placed in
No. 3 slope, so that should the quantity of water increase, the facilities
will be at hand to pump it out. The engine and boiler houses at No. 3
slope were destroyed by fire on December 9, 1891, thereby throwing the
colliery idle until December 21, when the damage was repaired and the
colliery commenced working and shipping coal.
Colbert Colliery.—The breaker of this colliery was destroyed by fire
in the early part of the year 1891. As soon as the debris was cleared
away, work was commenced on the new breaker, which was completed
in the month of September. The breaker is a single structure having a
caj^acity of 350 to 400 tons a day. An air shaft 106 feet long has been
sunk through the measures overlying- the No. 4 vein down to the top of
the anti-clinal for the purpose of ventilating the No. 4 vein working-s.
Central ia Colliery.—A tunnel has been driven north from Buck Mountain
to Mammoth vein north dip opposite to Big Mine Run drainage
tunnel. A tunnel was also driven north to connect the Buck Mountain
vein south dip with the Mammoth vein south dip. The workings in
the Mammoth vein bein^ below the levels of above mentioned tunnels
allow the water to flow from all the workings above, into Mammoth vein,
thence out through drainage tunnel to surface. Gangways are being
opened on Mammoth vein through the old workings. A new fan way
has been driven from the lower lift to surface, the total distance being-
1,100 feet.
Logan Colliery.— A new standard rope haulage with engine and all
connections complete, including 6,000 feet of g-inch steel wire rope has
been placed in No. 3 slope, Mammoth vein workings, and is in success-
ful operation. This makes the third plant of this kind at this colliery,
all of which work satisfactorily. Two new gangways have been driven
from the bottom of No. 3 slope eastward on the north and south dips
into the old Avorkingsof the Centralia and Hazel Dell collieries, forming
an outlet from the Logan colliery into the old Avorkings of the above
mentioned collieiies. This will allow the water g-enerated in the Logan
colliery to find its way to Big- Mine Run drainag-e tunnel, thence throug-h
said tunnel to surface. A new lift has been sunk on the No. 5 slope
Buck Mountain vein to the depth of 280 feet. This makes the fourth
lift on this slope. A bore hole 8 inches in diameter has been drilled
from the surface to Buck Mountain vein, the distance being 389 feet.
The object of this hole is to have a rope from the No. 1 slope on the
Mammoth vein to connect with the rope on the No. 7 slope, which is