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The modern "clean air" movement in the United States can be traced back to one small mill town in western Pennsylvania. In one brutal week in 1948, Donora's roughly 14,000 residents went about their daily lives while being subjected to one of the worst public health and environmental disasters in United States history. Before the horrendous incident, the borough of Donora, about an hour south of Pittsburgh, was proud of its industrialization. And like its sister steel city, the community was rel

United statesCharles staceyMark pawlewecDonora historical societyThomas lefflerAmerican steelDonora zinc worksZinc worksGreat depressionWorld warDonora smogGetty imagesZinc workHistorical societyMark pawlewecClean air