BURNT WIRE FROM THE HIGH PRESSURE FACILITY HPF - NARA - 17474316.jpg
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BURNT WIRE FROM THE HIGH PRESSURE FACILITY HPF NARA 17474316, Engine Research Building, US National Archives series: Photographs Relating to Agency Activities, Facilities and Personnel, Images from the National Archives and Records Administration, US National Archives location: other, BURNT WIRE FROM THE HIGH PRESSURE FACILITY HPF
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high-pass filter high wire pressure unit