events
A storage silo in Oppau, Germany, explodes, killing 500–600 people.
Related Wikipedia articles
Oppau explosion
1921 industrial disaster in present-day Ludwigshafen, Germany
The Oppau explosion occurred on September 21, 1921, when approximately 4,500 tonnes of a mixture of ammonium sulfate and ammonium nitrate fertilizer stored in a tower silo exploded at a BASF plant in Oppau, now part of Ludwigshafen, Germany, killing 500–600 people and injuring…Source: Wikipedia (CC BY-SA)
September 21
Day of the year
September 21 is the 264th day of the year in the Gregorian calendar; 101 days remain until the end of the year.Source: Wikipedia (CC BY-SA)