The Republican. [volume] (Oakland, Md.) 1877-current, 1886-07-24
The Edgar TompsOn Works.

The New York Coal Trade Journal
gives the following description of the
Edgar Thompson Steel Works, at
Braddock, Pennsylvania, the proper
ty Of Carnegie Brothers & Co., (lim-
ited). The works cover 35 acres of
ground, eleven acres of which are I'M
der roof. The buildings are all of
brick with the exception of the rail
mill and producer house, which are
iron. Twenty million gallons of wa
ter are consumed daily. Natural
gas from Pittsburgh will shortly be
used here. Sufficient steel rails are
turned out daily to lay from eight to
ten miles of railroad. The capacity
of the rail mill is three rails per min
ute. There are five blast furnaces.
known as A, B, G, d and E, f and
q are now in course of erection.
When all are completed the united
capacity will be 1900 tons of pig iron
per day. The furnaces are 20 feet
bosh by so feet in height. Furnace
A runs constantly on ferro managese
spiegel. The former is manufactured
as high as 90 percent managese. A
gross ton of pig iron is made with
net ton of fuel. WIitwell & Siemens
Cowper stoves are in use. The avea
age temperature of the blast is about
1902, blowing 10000 feet per min
ute. A iron is cast into ladies and
run into the works by the elevated
railroad, One-half mile in length, with
the exception of Sundays, when
they run into the chills. The pro-
cess is, we believe, peculiar to these
works, not being in use in any other.
The new furnaces in course of erec-
ton are better supplied with dust
catchers than any furnaces in the
world, one of which will be in opera
ton in September and the other next
January. Lake Superior and foreign
ores are worked. some coming even
from Greece. Missouri ores are also
worked; n mixture of ores yields
sixty percent at the furnace. When
the new furnaces are completed, Car
negie Bros. & Co., limited, will have
the largest reducing plant in the
world. A most superior quality of
iron ia being made for the manufac-
ture of steel by the direct process.
The molten iron thus brought to
the steel works goes first to the con-
verters, which are three in number.
each with capacity Of ten tons, sup
piled by steam from twelve steam
boilers. The machinery of the con-
Yerting department is handled by
hydraulic pressure. The blowing en-
gines, two in number, are $50 horse
power each. There are two cupolaS
for melting and recarbOnizing iron.
The capacity of the converting works
are from $50 to 900 tons per day of "a
hours. After the metal is converted
into steel it is cast into ingots of an
average weight of $500 pounds. The
blooming mill contains eight furna-
ces, with train of three high rolls,
which is equal to the capacity of the
conYerters. In the rail department
are six heating furnaces, with SINH
lar capacity to the above. The rail
train consists of three high rolls. and
has IA capacity of three rails per min
ute. The appliances to the rail rolls
embrace all the latest Improvements
as to table rollers. ETC., as well as the
patents of Capt. w. r Jones, the su-
perintendent, now owned by the
company. After the rail is rolled it
passes over a continuous train OF
moving rollers to the hot SAWS, where
in an instant it is cut into the desired
length. The hot bed is said by mill
men to be the most perfect in the
country. The finishing department
consists of four drill presses, four
STRENGTHENING presses and two cold