Freezing

I've worked at the hospital for nearly 10 years now, coming in the same doors at the same time pretty much every day. As I walked in today my first thoughts were that the road was being re-surfaced, but as I got closer I realised that this was not the case. The cloud of 'steam' was infact liquid nitrogen escaping as this chap was, I assume, filling up these canisters. It certainly looked impressive.