File:Balloons - Helium Plants - Development of helium work carried on under the direction of the Burea of Mines. Helium compressor and vaccuum pump interchanger, Plant No. 3, located three miles north of Petrolia, Texas - NARA - 20807962.jpg
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![File:Balloons - Helium Plants - Development of helium work carried on under the direction of the Burea of Mines. Helium compressor and vaccuum pump interchanger, Plant No. 3, located three miles north of Petrolia, Texas - NARA - 20807962.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/c/cc/Balloons_-_Helium_Plants_-_Development_of_helium_work_carried_on_under_the_direction_of_the_Burea_of_Mines._Helium_compressor_and_vaccuum_pump_interchanger%2C_Plant_No._3%2C_located_three_miles_north_of_Petrolia%2C_Texas_-_NARA_-_20807962.jpg/800px-thumbnail.jpg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 02:42, 22 September 2017 | ![]() | 5,362 × 3,560 (11.85 MB) | commons>US National Archives bot | Bot-assisted upload of US National Archives Identifer 20807962. |
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