Very, very old photographic film
On 03/12/2019 11:07, Martin Brown wrote:
It generally just burns incredibly quickly unless confined or provoked
by impact when it may detonate. Basically it is sheets of gun cotton.
My late father trained people to blow up tank traps etc. for D-Day. He
had some lovely anecdotes about gun-cotton. (He never did say where he
learned the trade).
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