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I have two words, cow magnets!  And they're actually used in cows to keep iron objects out of their intestines.  They're rounded on both ends and powerful.  As Earl said earlier, the sand will get into nearby exhibits.  

Occasionally, it whines up in the eyes.  I've had amazing experiences removing sand from eyes loaded with magnetic sand.  It doesn't happen frequently, but when it does cow magnets remove the iron particles like magic.
C
On Feb 28, 2010, at 8:11 PM, Amy Johnston wrote:

> ISEN-ASTC-L is a service of the Association of Science-Technology Centers
> Incorporated, a worldwide network of science museums and related institutions.
> *****************************************************************************
> 
> Hi,
> 
> Do any of you have magnetic sand exhibits where visitors can touch the sand?
> What issues have you found with them (sand in eyes etc) and how do you deal
> with them? 
> 
> I've found one hidden away in our basement, but am not sure about putting it
> out on the floor. 
> 
> 
> 
> Thanks in advance,
> 
> Amy
> 
> 
> 
> 
> 
> Amy Johnston Bray
> 
> Public Operations Manager
> 
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Charles Carlson
Senior Scientist
exploratorium
3601 Lyon St.
San Francisco, CA 94123
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Tel:   415-561-0319
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For information about the Association of Science-Technology Centers and the Informal Science Education Network please visit www.astc.org.

Check out the latest case studies and reviews on ExhibitFiles at www.exhibitfiles.org.

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