I remeember it was safety knives only at college.
Current apprentice has been on the job for two weeks, said to him under no circumstances if he to use a stanley blade because he doesn't know how to use one safely. Nipped out of the job for 10minuites, come back he comes running back to the van crying for a plaster. Asked him what happened, turned out he cut himself on a stanley blade taking some old lino flooring up, wasnt even looking at what he was doing when he cut himself!
Said to him I tell you things for a reason, not just for fun!!!! (Apart from when he asked for a Fellatio cake in Greggs for me)