31.   When sawing and machining treated wood, wear a dust mask.

32.   When working with attic insulation wear long sleeves, gloves and a dust mask.

33.   You can saw and sand pressure-treated lumber with ordinary hand or power tools, but always wear a dust mask and goggles to protect your eyes.

34.   You should also wear a dust mask when cutting pressure-treated lumber.

35.   Bremner wore a white dust mask over her face.

36.   Dust masks and blue hard hats have also become common everyday wear on this British Caribbean island, where most of the southern half has been left uninhabitable.

37.   Dust masks or cartridge-type respirators will not protect against silo gas, health officials said.

38.   Farrell-Silcott said she was worried about the health effects of the ash, especially on children, despite the widespread use of dust masks.

39.   In a cordoned-off area, white-smocked workers wearing dust masks pick through and carried away asbestos-based cement left behind from the explosion.

40.   Inside the warehouse, boat builders, some dressed in white overalls and wearing dust masks, worked feverishly to put the finishing touches on the first boat.