On this day in Labor History the year was 1948.
That was the day that a thick yellow fog rolled over the town of Donora, Pennsylvania just south of Pittsburgh.
Donora was a mill town, nestled in a valley on the bank of the Monongahela River.
By 1948, the town had grown to 14,000 people, who came to work in the town’s steel mills and the Donora Zinc Works.
For years the local residents had complained about the pollution that spilled from the plants.
Smog was a regular occurrence.
But this fog was even worse than usual.
A layer of cold air was trapping a noxious blend of nitrogen dioxide, sulfuric acid and fluoride pollution.
Twenty-four hours passed, and still the fog grew denser.
The police and local doctors began to receive reports of people having difficulties breathing.
The fog became so thick that residents could not see to drive.
For five days the smog hung over the town, until a rain fall began to break it up.
Nearly half of the towns’ residents became ill.
Twenty died.
U.S. Steel refused to take blame for the fog, even though they continued to run the plant as the deadly toxins continued to build.
According to a 2010 article by the Pittsburgh Post-Gazette, “Despite the efforts of industry to cast the tragedy as an “act of God,” the fatalities in Donora received national attention. The event changed the way air pollution was viewed, moving it rapidly from an aesthetic issue to a public health concern, and spurred local, state and federal officials to control toxic air pollution.”
In 2008 a Smog Museum opened with the motto “Clean Air Started Here.”
July 10 - Debs Arrested
July 9 - The Deadliest Commute
July 8 - Machinists Walk Out on the Airlines
July 7 - Fighting Privatization in Puerto Rico
July 6 - The Preacher and The Slave
July 5 - The Match Girls Strike
July 4 - The Guiding Light of Transparency
July 3 - Paterson Child Laborers Strike
July 2 - Denmark Vesey
July 1 - Crushing the Strike
June 30 - The Making of a Strikebreaker
June 29 - The Birth of a Working-Class Hero
June 28 - An Important Step for Labor
June 27 - Helen Keller, Labor Activist, is Born
June 26 - Gov. Altgeld Pardons Surviving Haymarket Prisoners
June 25 - The Haymarket Martyrs’ Monument
June 24 - Cutting Corners Costs Lives
June 23 - The Attack on Labor
June 22 - The Cuyahoga River Burns
June 21 -Molly Maguires Hanged in Pennsylvania
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