1.   Genuine Blue Horizon cartons contained blue powder, but the fakes were filled with a white substance, he said.

2.   An envelope containing white powder tested negative for anthrax and was forwarded to the FBI.

3.   Also, unlike the others, the letter in Chile did not contain powder.

4.   Each contains photoflash powder, which is more sensitive to accelerants than black or smokeless powder used in common fireworks such as firecrackers.

5.   Earlier reports mentioned a letter sent to the building that contained a powder.

6.   His first few bombs contained black powder but the Unabomber later graduated to more powerful concoctions using a mixture of aluminum powder.

7.   In some cases the canisters contained black powder, but could not be detonated, the officials said.

8.   Late that night, an employee at Home Depot in Canton drove to Brockton Hospital after she opened an envelope that contained white powder.

9.   Letter to Florida paper contains powder,

10.   Like the other letters from St. Petersburg, it contained a powder that early tests indicated was nontoxic.