SeeStewAmerican History & Politics

On this day — April 20

Curated American history anniversaries for April 20, each linked to a full SeeStew article with named sources. Empty calendar stubs are not published.

Deepwater Horizon explosion (2010)
Deepwater Horizon: The Oil Spill That Gushed for 87 Days
An explosion on a BP drilling rig killed 11 workers — then crude poured into the Gulf of Mexico for nearly three months. (Deepwater Horizon)

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