@joey jojo: you clearly have never been at a quick build. I still have the booklet, they are more worried about the way things look to the world and setting a good example than safety. More than half the booklet (I think it is about 16 pages) is spent on organization and dress code. Safety specific, beyond wear a helmet and eye protection and follow local laws there is very limited safety in there, nothing at all on specifics of power tools or equipment.
There are no requirements for volunteers that lead these projects or portions beyond their “spiritual maturity”, and have a penis which means an experienced professional could be instructed by a well meaning but incompetent elder, and that I have seen play out in reality - where an experienced mason told them they didn’t do the foundation to the correct depth and didn’t have any cavity wall, but because that didn’t stroke with the plans (and would make the building more expensive) they didn’t listen. The guy quit on the spot telling them they were going to get mold and sinkage, and guess what, he was right, not even 3 months later they had mold and a few months after that the foundation was exposed, off course that became another project they needed to raise another round of funding for.