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inclusions in solidified ingots. 5<br />
U.S. STEEL DUQUESNE WORKS<br />
HAER No. PA-115<br />
(Page 209)<br />
ENDNOTES:<br />
l."Duquesne Works to Get First U. S. Steel Oxygen<br />
Converters," Iron and Steel Engineer 39 (September 1962): 161;<br />
"Oxygen at USS May Spur Steel Spending," The Iron Age 190<br />
(September 6, 1962): 43; "Duquesne Works to Have Two Oxygen<br />
Steelraaking Furnaces," Blast Furnace and Steel Plant 50 (October<br />
1962): 996; "U. S. Steel Shuts Down Duquesne Open Hearths," Blast<br />
Furnace and Steel Plant 53 (October 1965): 959; "U. S. Steel<br />
Hails New Oxygen Facilities," Steel 154 (May 25, 1964): 47, 49;<br />
"Development, Design, and Operation of a Controlled-Circulation<br />
Fume Hood for Basic Oxygen Furnaces," Iron and Steel Engineer 42<br />
(July 1965) : 90; United States Steel Corporation, The Making,<br />
Shapingf and Treating of Steel. Ninth Edition, (Pittsburgh:<br />
1971) , 486, 492-3.<br />
2.United States Steel Corporation, "Description of Linde-<br />
Frankel Process," Unpublished Notebook for Plant Managers,<br />
Pittsburgh, 19 60, 2101-03; U.S. Steel Corporation, The Making.<br />
Shaping, and Treating of Steel. Ninth Edition, 486;<br />
"Modernization Program at Duquesne Works Marked by Completion of<br />
Two 150-Ton OSM Furnaces," Iron and Steel Engineer 41 (July<br />
1964): 201-04; "OSM Shop Is Important Addition in Duquesne Works<br />
Expansion," Blast Furnace and Steel Plant 52 (August 1964): 719-<br />
21, 732; United States Steel Corporation, "General Arrangement -<br />
Standpipe Slurry Degritting - OSM Plant: Drawing #49569, August<br />
1, 1963."<br />
3.United States Steel Corporation, "Slag Granulating System-<br />
Control Diagram: Drawing #51925, September 17, 1965"; U.S. Steel<br />
Corporation, "Location Plan and Key Sheet-Slag Granulating<br />
Facilities-B.O.F. Plant: Drawing #51922, August 14, 1965."; U.S.<br />
Steel Corporation, "Equipment Location-Slag Granulating-<br />
Separation Station - B.O.F. Plant: Drawing #51945, December 14,<br />
1965."; Joel Robert Zimmer, former Maintenance Manager at the<br />
Duquesne Works, Interview with author, July 27, 1990.<br />
4.United States Steel Corporation, "Additional Gas Cleaning<br />
Facility - BOP - General Arrangement - Plan -Duquesne Plant:<br />
Drawing #63 492, August 15, 1975."; U.S. Steel Corporation,<br />
"Additional Gas Cleaning Facility - BOP - General Arrangement -<br />
Duquesne Plant: Drawing #63493, August 27, 1975."; U.S. Steel<br />
Corporation, "Process Control Diagram - Gas Cleaning Plant -<br />
O.S.M.: Drawing # 49265, Revision #7, April 15, 1966."; Wayne<br />
Cadman, former General Superintendent of Plant Utilities,<br />
Interview with author, August 4, 1989; U. s. Steel Corporation,<br />
Operation Manual, Project No. 535-6017, "Additional W. Q. C.