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Industrial Archaeology Image Archive
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Site Name
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Duquesne Incline
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Duquesne Incline
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Duquesne Incline
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Duquesne Incline
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Duquesne Incline
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Duquesne Incline
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Duquesne Incline
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Duquesne Incline
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Duquesne Incline
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Duquesne Incline
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