Richard Dilena wrote:
>
> As to debris from fireworks, I was involved with a display a year or so ago,
> that was held on an oval. Apart from numerous small burn marks on the grass
> around the actual launching site, there was little further damage. Staff
> carrying out the clean up did find some sort of packaging used in the
> construction of the fireworks around the park, but it wasn't to much from
> memory.
Professional fireworks use mortar tubes to launch the shells into the
air
with a black powder charge. The shells consist of an explosive core
surrounded by the pellets that produce the colour (and sometimes
whistles)
wrapped into a paper and cardboard casing, with a time fuse that
detonates
the shell once it reaches the desired height. Upon detonation, there is
little left apart from smoke and fine ash, though a small amount of
paper
may survive. The charges and fuses are carefully calibrated, which is
how
they can synchronise the fireworks with a music soundtrack (a computer
is
used to launch the shells at the right moment.)
I remember reading something recently about a fireworks display to be
held
somewhere in this part of the world. The highlight was to be a very
large
shell (not the world's biggest, but one of the biggest), and that it
needed
a large (1km ?) safety zone around the launch site. This could explain
the
suggested placement on the sandbanks.
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Paul Taylor Veni, vidi, tici -
I came, I saw, I ticked.
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