Just FYI, an electric car isn't environmentally friendly, a brand new electric vehicle is worse than using a second hand diesel car.
What we need to do is build working and viable public transport and to stop cancelling massive projects so the Tories can throw the cash at their mates.
Airfed masks with the correct filter is perfectly fine. Combined with water suppression on the Stone cutting machine.
Decent ones can be pricey at about £700 each but that's cheaper than someone getting silicosis.