As I skim coat the ceiling, I have been sanding a lot of drywall with a hand sander. The white dust it produces is nasty and since it is a hand sander, I am relatively close to the dust production area. I wear a dust mask but it feels like it does not protect very well.
I am investigating several techniques to cut down my drywall dust "intake":
Wet sanding: sounds good but I am concerned about the look of the finish,
Pole sanding: a study by NIOSH shows that pole sanding dramatically reduces lungs exposure compared to hand sanding,
Sanding block with vacuum cleaner connection: as you sand, dust is sucked in by a shop vacuum equipped with a special filter (possibly HEPA rated).