It’s incredible how bad tradies are at PPE. When my solar panels were being installed on my house, the electrician was happily about to drill through asbestos cement eave lining before I stopped him, and at least made him put on a disposable P2 respirator mask I had lying around. But he still released asbestos fibres into the air and the ceiling cavity where his colleagues were working, and will have got it on his clothes and hair. How many times had he done it completely unprotected at other people’s houses without even thinking? (Australian houses often contain AC sheeting in houses built between the 50s to the 80s)

With silica it’s a similar story, we were moving in to an older office block that again had asbestos in the ceiling tiles, and I was wearing a respirator because again electricians had drilled it in a bunch of places (inside this time, ended up going through very expensive decontamination a couple of days later including ripping out and replacing half of the brand new carpet). Anyway, I was in the server room where an air-conditioner guy was installing a split system unit, and he asked me about it and I told him what was happened. He then said something like “Oh yeah, I definitely should have been more careful with that kind of stuff when I was a young fella”, and then proceeds to start drilling through the double brick wall (to install the piping to the outdoor unit) with no mask or hearing protection… Cutting brick and concrete releases silica into the air too, most tradies just give no thought to using proper PPE…