I came across the following 2 videos on the UK Government Health and safety website
https://www.youtube.com/watch?v=_4ky...ature=youtu.be
http://www.hse.gov.uk/woodworking/wo...t-exposure.htm
Please watch in full
You may also find useful information on these fact sheets
http://www.hse.gov.uk/woodworking/wis.htm
eg see http://www.hse.gov.uk/pubns/circular-saw.pd
and
https://www.youtube.com/watch?v=sXtp1nm6O14
And I have found the dyson soft brush very useful for vacuuming fine dust
regards Brian