I used to work offshore in the North Sea.
I kid you not they banned knifes on the rig, the HSE guy came round to each department and tool away all knifes and sharp pointy things. If you needed a knife you would have to go to the radio room and sign out a cutting tool.
Anotehr occasion a guy was spotted cutting a bread bun with a bread knife and as you do he was cutting towards himself (its just a bread knife!) unfortunately he was spotted by the rig supervisor who went ballistic, next thing we heard was a tannoy saying that if this ever happened again he would confiscate all the knives