It’s not just for the fields anymore. From the New York Times, :
PARIS, May 4 — French police are scrambling to locate 1,100 pounds of fertilizer that could be used to make a powerful bomb after the material was discovered missing on Monday in northern France.
The fertilizer, ammonium nitrate, is believed to have been stolen over the Easter weekend from the port of Honfleur near the mouth of the Seine river, according to officials quoted by local media. The officials said large quantities of the fertilizer were stored at the port without any particular security measures.
Ammonium nitrate is highly explosive when mixed with diesel or fuel oil and has been used for some of the most destructive terrorist bombs in recent history, including the 1995 Oklahoma City bombing and the bombings that killed 62 in Istanbul last year.
Sales of ammonium nitrate are strictly regulated in the European Union, where rules require that the fertilizer be produced with large, dense granules to prevent it from absorbing oil and being transformed into bomb material. But the granules can easily be broken up with commercial grinders.
The theft comes at a time when European security forces are on alert for terrorist attacks following the deadly March 11 training bombings that killed 191 in Madrid. …
In late March, British police seized more than half a ton of the fertilizer in West London in a raid on suspected Islamic terrorists. Earlier this month, Turkey joined the European Union in regulating sales of the fertilizer because of fears that it could be used again for bombings there.