Ive read the sheets, only cca has/had arsenic in it.
Ive not seen too many house frames that were constructed using cca treated pine.. :?
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either way - wood dust is not good for you and i think we all know that.
Wood dust has been evaluated by the Internation Agency for Research for Cancer (IARC) as group 1, carcinogenic to humans
So going back to my original point - always wear a mask
Good luck with it. Wish i had done a chippie or cabinet making apprentiship. Now i'm 25 and couldn't afford to go on to apprentices wages to do one, even if i could get someone to give me a go cause of my age to start with.