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Events on September 17 in history

Allegheny Arsenal
1862Sep, 17

American Civil War: The Allegheny Arsenal explosion results in the single largest civilian disaster during the war.

The Allegheny Arsenal, established in 1814, was an important supply and manufacturing center for the Union Army during the American Civil War, and the site of the single largest civilian disaster during the war. It was located in the community of Lawrenceville, Pennsylvania, which was annexed by the city of Pittsburgh in 1868.

Today, the site is the location of the nine-acre Arsenal Park as well as Arsenal Middle School, a county health services complex, and a large condominium development.

In 2012, officials from the Pittsburgh History & Landmarks Foundation began drawing attention to the deteriorating arsenal structures.

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Events on 1862

  • 30Jan

    USS Monitor

    The first American ironclad warship, the USS Monitor is launched.
  • 31Jan

    White dwarf

    Alvan Graham Clark discovers the white dwarf star Sirius B, a companion of Sirius, through an 18.5-inch (47 cm) telescope now located at Northwestern University.
  • 13Mar

    Emancipation Proclamation

    American Civil War: The U.S. federal government forbids all Union army officers from returning fugitive slaves, thus effectively annulling the Fugitive Slave Act of 1850 and setting the stage for the Emancipation Proclamation.
  • 15May

    Abraham Lincoln

    President Abraham Lincoln signs a bill into law creating the United States Bureau of Agriculture. It is later renamed the United States Department of Agriculture.
  • 17Aug

    Dakota War of 1862

    American Indian Wars: The Dakota War of 1862 begins in Minnesota as Lakota warriors attack white settlements along the Minnesota River.