In article , "Tony Bryer"
says...
In article , Grunff wrote:
However, the good news is it's very easy to buy, and quite
cheap too. You'll need a reasonable sized dewar, maybe 20-25l,
and an account with BOC. I pay ~£40 per fillup.

I remember going to a Royal Institution (?) science lecture
whilst at school and the lecturer put a sausage in a flask of
liquid gas. When he took it out it was of course supercold: he
dropped it and it shattered into fragments. Ever since I've
wondered what those fragments would be when thawed out: a sort
of mince? I'm not asking you to repeat the experiment g

I saw a similar thing at the Smithsonian, only he used a squash ball
and chucked it pretty high. When it hit the floor some unsuspecting
passers-by had a bit of a shock - it made quite a bang and there was
shrapnel flying around. Afterwards I picked up a few pieces; the
fractured surfaces looked like broken glass.