The Hercules Powder plant disaster in the United States kills 51 people and injures over 200.

Hercules Powder plant disaster

1940 explosion of an armaments factory in Roxbury, New Jersey, US

The Hercules Powder plant disaster was an explosion at an armaments factory owned by the Hercules Powder Company in the Kenvil section of Roxbury, New Jersey, on 12 September 1940. About 52 people were killed and 100 injured.