Re: NANFA-L-- playground sand & Costa Rica

geoffrey kimber (gkimber2-in-gmail.com)
Mon, 23 May 2005 07:04:48 -0500

Well, if you're not sure, buy a bag, take a sample and add vinegar or
or muriatic (HCl) acid. If it fizzes, it's not OK.

You're a grownup, so you probably realize that muratic acid is dangerous.

Geoff kimber
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