11.   The Department of Energy says its move to declassify data on plutonium and uranium at Rocky Flats will enable communities to better monitor the disposal of dangerous materials.

12.   The military deals with inherently dangerous materials such as explosives, solvents, jet fuels and a range of toxic chemicals.

13.   The most dangerous materials, they said, are bars of radioactive cobalt used used to irradiate food, medical devices and other products to sterilize them.

14.   The United States and Russia should organize a global coalition to secure and account for all dangerous materials and eliminate them where possible.

15.   These institutions, like the International Atomic Energy Agency or the Nuclear Suppliers Group, concentrate on export controls of dangerous materials.

16.   They studied a narrow, foot-deep creek, Acid Brook, which once carried mercury, lead and other dangerous material toward Pompton Lake.

17.   This is regarded as the safest way to dispose of the dangerous radioactive material.

18.   Williams was accused of being subversive and writing dangerous material.

19.   A powdery white substance in an envelope sent to a New York Times reporter tested negative for anthrax and other dangerous biological materials, the newspaper said Saturday.

20.   A government spokeswoman said FSD officers had traced the owner of the chemicals and established that he did not have a licence to store dangerous materials.