1.   Brazil is also growing in importance as a source of the precursor chemicals that Colombians use to manufacture cocaine.

2.   Controlling the flow of precursor chemicals into Colombia, however, has turned out to be as frustrating as efforts to stop the outflow of cocaine and heroin.

3.   De Francisco has also noted that destroying coca farms prevents the use of millions of gallons of pesticides and precursor chemicals needed to produce cocaine annually.

4.   His focus was on the presence at the plant of Empta, a precursor chemical used to make VX, a deadly nerve gas, the spokesman said.

5.   Meanwhile, to the disgust of Pecoul, interest in the precursor chemical has suddenly soared because it might prevent the growth of facial hair in women.

6.   Meanwhile, interest in the precursor chemical has suddenly soared because it might prevent the growth of facial hair in women.

7.   Ninety percent of the precursor chemicals necessary to manufacture methamphetamine are smuggled in through Mexico.

8.   One of the biggest headaches for Colombian authorities is figuring out how to safely dispose of huge quantities of confiscated precursor chemicals.

9.   Secretary of Defense William Cohen and a senior intelligence official told reporters Thursday the facility was turning out precursor chemicals for VX production.

10.   The globalization of the chemical industry has led to a rise in international flows of precursor chemicals and makes such flows increasingly hard to monitor.