1977年黑色星期一:1977年9月19日,美国俄亥俄州扬斯敦YoungstownSheetandTube(英语:YoungstownSheetandTube)关闭並解雇5000名工人,对扬斯敦的经济(英语:Economy of Youngstown, Ohio)造成毁灭性的打击 1990年黑色星期一(英语:1990
(合併與Baosteel forming China Baowu Steel Group) YoungstownSheetandTube(英语:YoungstownSheetandTube) (收購於Jones and Laughlin Steel Company ca. 1977) 2021 Top
1377/hlthaff.2011.0153. James Rhodes and John Russo. Shrinking 'Smart'?: Urban Redevelopment and Shrinkage in Youngstown, Ohio. Urban Geography. 2013, 34