Donora, PA, United States
1948 Donora Smog, The. Major federal clean air laws became a legacy of this environmental disaster that focused national attention on air pollution. In late October of 1948, a heavy fog blanketed this valley, and as the days passed, the fog became a thick, acrid smog that left about 20 people dead a
nd thousands ill. Not until October 31 did the Donora Zinc Works shut down its furnaces--just hours before rain finally dispersed the smog.
Listen to the audio guide for Blue plaque № 29767 Free on WIP — starts by itself when you arrive, even with the screen off