A giant explosion occurs during the loading of fertilizer onto the freighter Grandcamp at a pier in Texas City, Texas, on April 16, 1947. Nearly 600 people lost their lives and thousands were injured when the ship was literally blown to bits.
Ammonium nitrate was used as an explosive by the U.S. Army in World War II and, after the war ended, production of the chemical continued as its use as a fertilizer became accepted. However, the precautions used in its transport became far more lax in the post-war years.
On April 16, the Grandcamp was being loaded with ammonium nitrate as well as tobacco and government-owned ammunition. Cigarette smoking, although officially banned, was a common practice by longshoremen on the docks. Just two days prior to the explosion, a cigarette had caused a fire on the docks. On the morning of April 16, smoke was spotted deep within one of the Grandcamp‘s holds.
Some water and an extinguisher were used to fight the fire, but hoses were not employed for fear of ruining the cargo; there were already 2,300 tons loaded on the ship. While the ammunition was removed from the ship, the crew attempted to restrict oxygen to the hold in hopes of putting out the fire. Apparently they did not realize that because of ammonium nitrate’s chemical composition, it does not require oxygen in order to burn.
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