21.   This rubbing can break the paint film and pulverize it into fine lead dust that can easily become airborne or come in contact with your hands or mouth.

22.   Veverka speculates that perhaps static electricity lifted fine dust particles off the surface, allowing them to move down to the bottom.

23.   Will it sink into fine dust and get stuck?

24.   Fine chalky dust obscured the remaining frescoes.

25.   Near the Macedonian border, a cement plant churns out a fine white dust that sometimes comes down like snow flurries.

26.   Soldiers covered it with plastic tarps to prevent any of the fine dust from blowing away.

27.   The red earth, ideal for coffee, is turning to a fine brown dust that covers everything.

28.   The storm, which blanketed much of Egypt with fine dust, had reduced visibility to near zero.

29.   The yearly Harmattan wind blowing down from the Sahara has coated the town in a fine dust, leaving everything covered in shades of brown.

30.   Tucked behind the World Trade Center, the chapel was covered with fine dust after the twin towers collapsed and has not been open to the public since.