19 Mar

File:A MONITORING SYSTEM TO DETECT CHLORINE LEAKAGE IS SET UP BY THE ENVIRONMENTAL PROTECTION AGENCY AFTER A BARGE... - NARA - 543894.jpg

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{{Uncategorized-NARA|year=2011|month=October|day=9}}
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[[Category:Environmental Protection Agency, United States]]

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[[Category:Chlorine]]

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[[Category:Men at work in the United States]]

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[[Category:Men with hard hats]]

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[[Category:White helmets]]

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[[Category:Louisville, Kentucky, in the 1970s]]

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[[Category:1972 in Kentucky]]

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[[Category:April 1972 in the United States]]

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[[Category:Water pollution detectors]]

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[[Category:Water pollution]]

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[[Category:Water pollution in the United States]]

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[[Category:Rear views of people]]

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