The Marianna Coal Mine in Pennsylvania exploded and killed 154 men.
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The first newspaper from a vending machine was bought in Columbia, Pennsylvania.
The first music store in America was opened in Philadelphia by Michael Hillegas.
Pittsburgh hosted the world's largest pinball tournament.
One hundred and forty thousand miners went on strike in Pennsylvania.
The Women's College of Pennsylvania, US opened – making it the 2nd female medical school in America.
