In article , DT says...

Yep, I've seen it happen also. I guess the average citizen is pretty shocked to
think of people walking around in a cloud of *damn* cold nitrogen with liquid
on the floor, but we did it all the time.

Ha ha. I was putting some LN2 into a small hand dewar one
time, outside a co-workers's lab. I made the comment to
him that the LN2 worked *great* at removing floor tiles
and he said that was bull****, it would never do that.

So I simply poured a small steady stream onto the floor
and sure enough that tile fractured into a hundred pieces
and the mastic let loose on about half of them.

You should have heard the crying and wailing, "look what
you just did to the floor outside *my* lab!!"

They actually removed the accumulated paint from the inside
of the statue of liberty using LN2 - stripped it all off
without damaging the already-fragile iron armature inside
of the copper skin.

Jim

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