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Description: | An oil field called Triumph Hill held the highest density of wells in the Oil Regions. Caption reads: "Triumph Hill, Bradford, PA." |
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Description: | A top flow and a side flow of an oil well are shown in Bradford, the home town of American Refining Group oil refinery, the oldest continuously operating r... |
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Description: | A side flow of an oil well shown in Bradford, the home town of American Refining Group oil refinery, the oldest continuously operating refinery in the Unit... |
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