Don't overlook that important detail! Directly on the ice is bad. A severed body part needs to be kept cool, but should not be frozen, even just in points of contact with the ice. The insulation of a bag, or better double-bagged, protects it from cellular damage.Interestingly, I was at a holiday party last night and ran into a hand surgeon. ... He said to put them in a clean bag and put that on ice.
And then you ban them from the shop. Instantly. Forever. Because they have just announced that the rules don't apply to them. Machines are like laws of nature: the penalty for ignoring the rules is death or worse, there's no appeal, you don't get a do-over, and the penalty is imposed instantly without pity.What's amazing is how people can react so negatively when you try to share safety concerns like that.
Feeling the vibrations in a machine running is important to me as you can tell a lot about what is going on. I often rest one hand somewhere on the machine so I can "feel" changes in it running. I think if you don't want dirty hands, you should not really aspire to be a machinist, but that is my opinion.