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Edwaste: Downtown Pittsburgh
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Edwaste: Downtown Pittsburgh
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Edwaste: Downtown Pittsburgh
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Edwaste: bessemer converter 2
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Edwaste: Monongahela Incline in the Fall, Pittsburgh PA
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Edwaste: PA225897
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Edwaste: PA225915-01
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Edwaste: Bessemer Convertor, PA
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Edwaste: Bessemer Converter/PPG building 10/2007
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Edwaste: Bessemer Convertor, Pittsburgh, PA 10/2007