1.   The major pointed to a white substance on the floor.

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

3.   There were sandwiches and meat on sticks, fruit and small pots of a strange looking white substance.

4.   Another case involves a former Home Depot employee in Frazier, Pa., who sent an envelope to the store containing a white powdery substance and a note.

5.   As they began their latest excursion, the cosmonauts reported a white powdery substance around their outer airlock hatch.

6.   At The New York Times, a reporter received an envelope containing a powdery white substance, and law enforcement officials were investigating.

7.   At the same time, a suspicious letter with a powdery white substance forced the New York Times offices closed and a third-floor newsroom emptied.

8.   A full block in Lisbon was evacuated after a white substance was sent to a car repair shop.

9.   But it has largely gone ignored and unnoticed, until anthrax scares turned white powdery substances into potential threats.