The 1948 Donora Smog
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 and thousands ill. Not until October 31 did the Donora Zinc Works shut down its furnaces--just hours before rain finally dispersed the smog.
Marker is on Meldon Avenue (Pennsylvania Route 837) near 5th Street, on the right when traveling north.
Courtesy hmdb.org
