31.   In one section of the video, a dust particle can be seen being sucked into the spinning propeller before being kicked out again.

32.   Nomadics, too, is working on further refinements, most notably an attachment to vacuum up dust particles containing TNT byproducts in the soil.

33.   Only two months ago, he called the state to show cracks in his back patio, fearing that chemicals are released in dust particles.

34.   Others say that smaller fibers and hybridized dust particles are not sufficiently understood.

35.   She said generally such lead dust particles are not airborne.

36.   Some dust particles can conduct electricity and cause an electrical short circuit.

37.   Some dust particles are actually pretty good conductors of electricity.

38.   Since it dries faster than varnish, it is less likely to collect dust particles as it cures, so it needs less sanding and rubbing.

39.   Spaeth noted that children typically ingest dust particles at a rate more than twice that of adults.

40.   The experiment revealed that static electrical charges on the surfaces of dust particles draw them into clouds.