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Bureau of Mines, low temperature laboratories, between 1905 and 1945. The United States Bureau of Mines (USBM) was the primary US government agency conducting scientific research and disseminating information on the extraction, processing, use, and conservation of mineral resources. Bureau of Mines, low temperature laboratories, between 1905 and 1945. Creator: Harris & Ewing. (KEYSTONE/HERITAGE IMAGES/HERITAGE ART)