Hello. On the assumption that dry ice might be used relatively frequently in secondary, (I teach primary), I wanted to garner some advice on using dry ice. What would any risk assessment involve? What are the safety issues, other than ensuring no skin contact is made? What safety equipment is necessary? Gloves and goggles? I'd only have one small, supervised group working with the ice at a time, of course. I'd be using it to make ice cream. Heston Blumenthal inspired.