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Historic Name: Present Name: Location: Construction: Documentation: U.S. STEEL DUQUESNE WORKS HAER No. PA-115 (Page 227) U.S.S. Corporation, Duquesne Works, Rolling Mills, Bar Rolling Systems U.S.X. Corporation, Duquesne Works, Rolling Mills, Bar Rolling Systems Lower Works 1906, and ca. 1940 All photographs of the Primary Mills are located in HAER No. PA-115-D. Photographs of the Twenty- Two Inch Bar Mill (No. 5 Mill) are located in HAER No. PA-115-G. DESCRIPTION I. Twenty-Two Inch Bar Mill fNo. 5 Milll: A. Bloom Yard: The 66'-8" wide x 209' long bloom yard is laid out on a north-south axis and is located approximately 160* northeast of the electric furnace building. A steel-framed overhead craneway running the length of the bloom yard supports a 15-ton E.O.T. crane. Billets which were rolled at the primary mill were stored in the bloom yard prior to being rolled into bars. Construction date: 1906. B. Pre-Heating Furnace Building: Laid out on a north-south axis, the one-story, 71 f -10" wide x 128* long preheating furnace building is adjacent to the bloom yard. The riveted steel- framed, corrugated metal clad building was built upon a concrete foundation by the American Bridge Company. Its gable roof and monitor are supported by riveted Fink trusses. A 15-ton E.O.T. crane rests on top of a craneway spanning the length of the building. Located inside of the building at its southern end is a Loftus Continuous Preheat Furnace. The furnace, which operated on mixed fuel and was capable of heating billets to 1500° F, has a 18* wide x 39' long hearth. Billets entered the southern end of the furnace and were discharged from its northern end onto a cable driven flat transfer car on standard gauge rails. Two large motor driven fans, located near the western wall of the building, provided combustion air to the furnace. Waste gas from the furnace was conducted through a large brick flue stack located just outside of the western wall of the building. Construction date: ca. 1940. C. Batch Furnace Building: The one-story, 82' wide x 176* long batch furnace building is laid out on a north-south axis. Constructed by the Duquesne Works on a concrete foundation, the
U.S. STEEL DUQUESNE WORKS HAER No. PA-115 (Page 22 8) riveted steel-framed building is located just north of, and in line with, the pre-heating furnace building. In order to provide a clear passageway into the pre-heating furnace building and the 22" bar mill building, the batch furnace building consists of an open northern and southern end. The western wall of the building is constructed of brick. The eastern wall of the building has been removed and replaced by a corrugated metal lean-to. Three rows of segmented archway windows run along the building's western wall. The building's corrugated metal roof and monitor are supported by Fink trusses. Three regenerative batch furnaces are laid out near the inside western wall of the building. Constructed of brick and equipped with six steel charging doors, each of the regenerative furnaces has a 18' wide x 36' long hearth. Located just south of the line of regenerative furnaces are three large motor driven combustion air fans (one for each furnace). Three large steel waste gas flue stacks are located just west of each regenerative batch furnace and extend through the roof of the building. Set inside of the lean-to along the eastern side of the building are two non-regenerative batch furnaces. Constructed of steel and equipped with two charging doors, each of the non-regenerative furnaces has a 22' wide x 24' long hearth. One large motor driven combustion air fan per furnace is located between the two non-regenerative batch furnaces. One large steel waste gas flue stack per non-regenerative batch furnace is located just outside of the eastern wall of the lean-to. Both types of furnaces operated on mixed fuel and were capable of heating billets to temperatures ranging from 1500° to 2300° F. Located at the northern and southern end of the building is an overhead structural steel runway extending across the building in an east-west direction. A 5-ton mobile Morgan charging machine is suspended from each runway. The machines removed billets from the transfer car and charged them into one of the batch furnaces. After the billets had been heated to rolling temperature, one of the charging machines removed them from the furnace and placed them, one at a time, onto the 3' wide x 110 1 long electric motor driven bloom delivery table. The billets were conveyed along the delivery table to the descaler, located at the southern end of the 2 2" bar mill building. Construction date: 1906. Installation of non-regenerative batch furnaces: ca. 1940. D. Twenty-Two Inch Bar Mill Building: The one story, 22" bar mill building is approximately 70' wide x 430' long. Laid out on a north-south axis, the building is adjacent to the northern end of the batch furnace building. Constructed on a concrete foundation by the Duquesne Works, the riveted steel-framed
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FART THREE: 1946-1988 U.S. STEEL DU
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seeks to develop it into an industr
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Installation Date: 1955. U.S. STEEL
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cooling tower has a capacity of 190
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* * tunnel beneath the clarifier. I
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dumped. Construction Date: 1957. U.
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B. Hoist House,: U.S. STEEL DUQUESN
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