3.80年由盛到衰美国的钢铁工业凭借着丰富的原料资源,优越的运输条件,旺盛的市场需求,加上立国以来本土未曾遭受过战火的蹂躏,反而在两次世界大战和侵朝、侵越战争中捞到巨额好处,因此,从1973～1985年间虽经历过经济不景气和钢铁工人大罢 3.80 years from the flourishing to the bad by the steel industry in the United States by virtue of its abundant raw materials resources, superior transportation conditions, strong market demand, coupled with the country since the founding of the country has not suffered the ravages of war, but in two world wars and invasion, As a result, the economic benefits have been exacerbated by the economic downturn and the steel workers have been on strike since 1973-1985