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Historic Name:<br />

Present Name:<br />

Location:<br />

Construction:<br />

Documentation:<br />

STEELMAKING PLANT - OPEN HEARTH<br />

U.S. STEEL DUQUESNE WORKS<br />

HAER No. PA-115<br />

(Page 164)<br />

U.S.S. Corporation, Duquesne Works: Open Hearth<br />

Steelmaking System<br />

U.S.X. Corporation, National-Duquesne Works; Open<br />

Hearth Steelmaking System<br />

Upper Works, Duquesne, Allegheny County, PA<br />

1900, 1908<br />

Photographs of the Blast Furnace Plant located in<br />

HAER No. PA-115-A.<br />

DESCRIPTION<br />

I. Open Hearth Number Two Mixer Building: Laid out on a north -<br />

south axis, the mixer building was built by the American Bridge<br />

Company. It is 132'-9" wide x 58'-0" long x 45'-0" high to the<br />

underside of the truss and is built on a concrete foundation.<br />

The western half of the building adjoins the southern end of the<br />

Open Hearth Number Two furnace building. The steel framed<br />

building has a gable roof and monitor which is supported by Fink<br />

trusses. Its exterior is made up of corrugated metal. Four<br />

ventilation hoods protrude up through the roof on its eastern<br />

side. Construction date: 19 09.<br />

II. Open Hearth Number Two Stock Yard: The 60'-2" wide x 960'-0"<br />

long stock yard is laid out on a north-south axis between the<br />

eastern wall of the Open Hearth Number Two furnace building and<br />

the western wall of the BOP shop, it was constructed by the<br />

American Bridge Company. A 57'-11" wide x 28'-3" high craneway<br />

runs the length of the stock yard. It carries one American<br />

Bridge E.O.T. crane with a 10-ton capacity.<br />

Construction date: 19 08.<br />

III. Open Hearth Number Two Furnace Building: Constructed by the<br />

American Bridge Company, and located approximately 350'-0" north<br />

of blast furnace number one, the one story, 124'-6" wide x 1005'-<br />

0" long furnace building is laid out on a north-south axis. The<br />

building's concrete foundation supports a steel framework. Its<br />

gable roof and monitor is supported by riveted Fink trusses and<br />

its exterior is made up of corrugated metal.<br />

The building is divided into two sections, the charging<br />

aisle and the pouring aisle. The charging aisle forms the<br />

eastern half of the building and is 69'-6 1/2" wide x 1005'-0 M<br />

long x 45*-0" high to the underside of the truss. A 65'-0" wide<br />

x 27'- 7 3/4" high craneway runs the length of the aisle. It<br />

carries two Alliance 110/40/20-ton capacity E.O.T. cranes. Both

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