Timeline Sunday 31 October 1948

2nd Millennium › 20th Century › 1940s › 1948 › October 1948 › 31 October 1948

Sunday 31 October 1948

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All times in UTC · Dashed edge = started before, or continues beyond, this day

Events on Sunday 31 October 1948 1

1948 Donora smog A temperature inversion traps zinc and steel works pollution over Donora, Pennsylvania, killing about 20 people and sickening thousands. It spurred US air pollution laws.

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