Keywords: ORE CARRIER HEADS INTO LAKE SUPERIOR FROM DULUTH HARBOR AHEAD IS A LAYER OF SMOG HANGING IN THE AIR OVER THE CITIES... - NARA - 551542.jpg Scope and content General notes 551542 Local identifier 412-DA-9057 Environmental Protection Agency 12/02/1970 - NARA-Author Emmerich Donald Photographer 3045077 <br /> Duluth Saint Louis county Minnesota United States North and Central America inhabited place 4201404 46 783 -92 1 <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 06/1973 Record group Record Group 412 Records of the Environmental Protection Agency 1944 - 2006 Record group ARC 708 DOCUMERICA The Environmental Protection Agency's Program to Photographically Document Subjects of Environmental Concern compiled 1972 - 1977 Series ARC 542493 File unit File unit ARC Variant control numbers Agency-Assigned Identifier 151/57/009057<br /> NAIL Control Number NWDNS-412-DA-9057 Other versions <gallery> File ORE_CARRIER_HEADS_INTO_LAKE_SUPERIOR_FROM_DULUTH_HARBOR_AHEAD_IS_A_LAYER_OF_SMOG_HANGING_IN_THE_AIR_OVER_THE_CITIES _-_NARA_-_551542 tif tif File ORE_CARRIER_HEADS_INTO_LAKE_SUPERIOR_FROM_DULUTH_HARBOR_AHEAD_IS_A_LAYER_OF_SMOG_HANGING_IN_THE_AIR_OVER_THE_CITIES _-_NARA_-_551542 jpg jpg </gallery> NARA-cooperation PD-USGov Lake freighters Air pollution in the United States Duluth Minnesota |