Andy Dingley wrote:
On Fri, 6 Aug 2004 10:27:08 +0000 (UTC), "Andrew Mawson"
wrote:

Having seen (and heard the screams) of the effect of hydroflouric acid on
human beings I wouldn't lets it within a mile!

Screams ? That's unusual. One of its less pleasant characteristics is
that it's not usually painful, just a slight tingling. It can be hours
later before you notice there's any injury.

Then again, if it's in a dose not high enough to kill the flesh, it
can cause CaF crystals to form on the bones, irritating them.
Treatment is to try to scrape it off the bones mechanically.