Dunno about other parts of the world but here in Australia "normal
play sand" translates into beach sand which implies a somewhat
elevated salt content, so beware! I look out for "river sand" which,
in addition to being relatively salt free, is a bit coarser than play
sand.
-- Brett Lymn, Computer Systems Administrator, AWA Defence Industries
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"It's fifteen hundred miles to Ankh-Morpork" he said. "We've got three
hundred and sixty three elephants, fifty carts of forage, the monsoon's
about to break and we're wearing ... we're wearing ... sort of things,
like glass, only dark... dark glass things on our eyes..."
- Terry Pratchett "Moving Pictures".