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The Times of India
The Times of India
World
TOI World Desk

In 1969, Chattanooga was declared America's worst city for particulate pollution; three years after imposing strict controls, every major polluter met the new standard

During the late 1950s and early 1960s, smoky skies were common in Chattanooga, Tennessee. What had once been seen as a byproduct of rapid industrialisation was becoming a health hazard for residents because of air pollution.

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