pa1778data.pdf

U.S. STEEL DUQUESNE WORKS
HAER No. PA-115
(Page 219)
which is located outside of the western wall of the building in
the scrap and scale yard. The 103' long x 28' wide x 49' deep
scale pit is divided into three separate stilling chambers. The
accumulated solids in each of the chambers were periodically
cleaned out by a clam bucket which was operated by an E.O.T.
crane. In addition, the middle chamber contains a rope skimmer
which was used for the removal of floating oil. The oil was
subsequently squeezed from the rope and collected in 55-gallon
drums. The third chamber of Scale Pit No. 1 contains four
vertical pumps. All waste water from Scale Pit No. 1 as well as
from Scale Pit Nos. 2 and 3 was directed to this chamber where it
was pumped over to the waste water treatment facilities which
serviced the works* rolling mills.
The second section of the flume system covers the area
between the 46" mill shear and the 36" mill shear. The design of
both the flume and Scale Pit No. 2 are similar to the No. 1
system. Partially treated waste water from Scale Pit No. 2,
which is located in the scrap and scale yard opposite the 36"
mill, flowed by gravity from its third chamber through a sewer to
the third chamber of Scale Pit No. 1.
The third section of flumes covers the entire lower end of
the mill beginning at its hot test-saw area. It consisted of a
series of interconnecting flumes which serviced the 21" mill,
hot-saw lines, transfer beds, skew tables, and all other
facilities in the area. As with the first and second sections of
the flume system, waste water from the flumes flowed into Scale
Pit No. 3 located outside of the western wall of the building in
the scrap and scale yard. Waste water from Scale Pit No. 3, like
Scale Pit No. 2, flowed by gravity from its third chamber through
a sewer into the third chamber of Scale Pit No. 1.
Construction of Building, Rolling Facilities, and Flume
System: 1959.
Addition of vertical pumps at Scale Pit No. 1: 1981.
D. South Motor Room: The 672• long x 60' wide south motor
room is a sheet metal lean-to off of the eastern wall of the
primary mill building in line with the 46" x 110" mill and the
36" x 78" mill. It is laid out on a north-south axis.
Constructed by the American Bridge Company on a concrete
foundation, the steel-framed building is approximately 60' high.
It consists of a ground floor and basement. Warren trusses
support the building's slanted roof. A craneway spanning the
width of the building and extending its entire length supports a
60-ton E.O.T. crane. In order to provide access for this crane
to service the adjacent roll shop, the building has no northern
wall.