1.   How much radioactive dust is in my body?

2.   The dust is diabolical - at one stage you could be fired for using a sweeping brush and not a vacuum.

3.   There was dust everywhere - the shop was filled with a dense fog of it.

4.   When they arrived in camp, the dust was unendurable.

5.   The dust was so thick that for a moment he could not see.

6.   Dust is only particles of other stuff, after all.

7.   And dust is all it takes in some cases, according to scientists, who are growing more and more cautious in their definition of lead poisoning.

8.   Better ventilation has been installed, and some workers have newer protective gear, although the dust is still a major concern.

9.   Airborne dust is the cause of most explosions, he said.