coal trade bulletin - Clpdigital.org

30 THE COAL TRADE BULLETIN.
of other coals, mainly for lake shipments during
the navigation season.
Great care is used in preparation of the roal
at Bergholz to insure a thoroughly clean product
for meeting the exacting requirements of the im­
portant industry to which the fuel so largely goes.
Fig. 2 -T"pp< . Side of Tipple I. omotive fu
The tipple is equipped to prepare and load slack.
nut and slack, %-inch lump, 114-inch lump, ami
rescreened lump. Some contract coal goes as
mine-run.
The coal seam is clean except for a thin bone
band, which splits out easily and is readily detected
if loaded.
The niiners are
closely watched and
penalized rigidly if
they load out any
considerable amounts
of this band.
The coal mines
blocky and could be
shipped in even
larger lumps than
now but for the diffi­
culty of loading the
mine cars under low
1 oof.
Fig. 1 is a view
downward from the
hillside and includ­
ing the entire plant.
On the right is the
tipple; then to the
Fig. I, an
spans three loading tracks, while a curved boom
chute extends out over a fourth track for end
loading of lump with minimum breakage.
The shops are well equipped with drill press,
lathe, crane, etc., so that nearly all repair work
can be done to best advantage.
It Left
The fan is 14x3%
feet in size, driven
by a steam engine.
Four boilers of 550
horsepower capacity.
furnish steam at 90-
pound pressure for
driving the fan en­
gine, the slope rope
hoist, and the power
house engines.
In the power house
are two generators,
belt driven from two
engines. Fig. 3. The
large generator is a
250-kw. unit, which
carries the day load;
the smaller is of 52kw.
capacity and is used for night duty, driving
electric pumps, etc.
The mine is entered by a slope of about 25 per
cent., 100 feet inside to the coal and 100 feet out­
side to the knuckle on the tipple. On this slope,
mine cars are handled in trips of four cars by a
nd Small Engines, Driving Generators.
left tbe boiler bouse, engine-generator house and
rope haul operated by a geared steam engine in
office; off to the left the shops; in the foreground,
the house beneath the tipple. The slope is nar­
part way up the hill, the fan house.
row at present, but will be widened soon so that
Fig. 2 shows the tipple and boiler bouse, and
the gauntlet tracks may be eliminated and straight
the runway to the locomotive fueling dock which
double tracks laid. On the level at the bottom
is soon to be replaced by a new one. The tipple
the rope is transferred from empties to loads by