Keywords: Commander J. M. Amberson queries miner as to working of "Airdox" compressed air torpedo. Pressure of 10,000 lbs. per.... - NARA - 540358.jpg Scope and content General notes 540358 Local identifier 245-MS-326USN Department of the Interior Solid Fuels Administration For War 04/19/1943 - 06/30/1947 NARA-Author Department of Defense Department of the Navy 09/18/1947 - Photographer 1105706 <br /> Still Picture Records Section Special Media Archives Services Division NWCS-S National Archives at College Park 8601 Adelphi Road College Park MD 20740-6001 1946-06-21 Record group Record Group 245 Records of the Solid Fuels Administration for War 1937 - 1948 Record group ARC 572 Photographs of the Medical Survey of the Bituminous Coal Industry compiled 1946 - 1947 Series ARC 540230 File unit File unit ARC Variant control numbers NAIL Control Number NWDNS-245-MS-326USN Other versions <gallery> File Commander_J _M _Amberson_queries_miner_as_to_working_of_ Airdox _compressed_air_torpedo _Pressure_of_10 000_lbs _per _-_NARA_-_540358 tif tif File Commander_J _M _Amberson_queries_miner_as_to_working_of_ Airdox _compressed_air_torpedo _Pressure_of_10 000_lbs _per _-_NARA_-_540358 jpg jpg </gallery> NARA-cooperation PD-USGov Coal mining in the United States |