1.   And a powdery substance sent to a New York Times reporter turned out tested negative for anthrax and other dangerous biological materials.

2.   As an arms control expert, Khripunov frets about the weapons and other dangerous materials still found in the old Soviet empire.

3.   A. Plutonium is without a doubt a dangerous material.

4.   But interviews with officials of both companies and a review of public records show that both may have missed opportunities to prevent the loading of dangerous materials.

5.   He acknowledged that military action alone cannot rid Iraq of chemical and biological weapons nor compel Saddam to abandon his ambitions to stockpile dangerous materials.

6.   He has also ordered two nearby chemical works that use dangerous materials like phosgene gas and gunpowder to shut down until new safety inspections have concluded.

7.   It has also improved its ability to make dangerous materials into weapons, including increasing the range of its missiles, according to a senior Security Council diplomat.

8.   Keeping dangerous materials out of the hands of terrorists is an enormous task, experts say.

9.   Supporters said the amendment would limit exposure to dangerous materials and unhealthy air.

10.   The category does not include more dangerous material, like spent fuel rods from the cores of nuclear reactors.