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SMOG OBSCURES BIRMINGHAM'S SKYLINE. THE CITY'S ABUNDANCE OF COAL IRON ORE AND LIMESTONE SUPPORTS U.S. STEEL'S TWO... NARA .tif Scope and content General notes Local identifier DA Environmental Protection Agency NARAAuthor Woodson LeRoy photographer Photographer File SMOGOBSCURESBIRMINGHAM'SSKYLINE THECITY'SABUNDANCEOFCOAL