Most firms [small family firms definitely are] are liars and general tossers, and would GLADLY blame you if the **** hit the fan..
About 20 years ago i was working as a welder, [for about three days] for a firm that made chip shop ranges.. I was fabricating and then welding together the large 6mm steel pans that the chips were cooked in.
In the room next door, about 30 feet away, i could see a bloke [i now know to be a moron] lowering these pans into the ranges, as he did so, a large puff of what looked like white smoke would arise. Oh well....
After about three days, the boss came up to me, and wanted me to "prepare the insulation for the pans" It was in panels about an inch thick..
Anyway, he showed me how to cut the stuff, it was easy, you just used an ordinary kitchen knife, it was like cutting a meringue in half..
He said you should wear a mask, and produced a disposible paper mask for me.. Sure enough, everytime you cut a bit, it was like smoke came up from it.. After about a minute of this, i thought hang on, and went to find the packaging this stuff came in. It was in large boxes that were printed with a skull and cross bones and labeled "this product causes cancer" what the courgette!!!!!
Next door funnily enough, was my mates hire shop. I went straight in there and asked him. He got some kind of an expert from a respirator firm on the phone. This expert said that from the code on the mask i was given, it was a 20 pence one, intended for "nuisiance" dusts such as sawdust.. He said i should have a proper remotely air fed one for what i was doing...
That was it, i just sat in the hire shop all afternoon, the boss from the chip shop range place did not even come looking for me, i think he knew that i was on to the Tomatoe'd.. I never went in there ever again, not even to collect the three days wages i was owed.
Just wish i had gone to the HSE now, but how do you contact them?? Not interested in helping the small man, just making themselves look big when forced into action by fire brigade or a coroner i would say..
So, make no mistake, do not put yourself in a position where you could be blamed, just walk away..
john..