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Subject:	Re: Mine Blasting/Silica Dust
From:	[log in to unmask]
Reply To:	Informed Discussion of Beekeeping Issues and Bee Biology <[log in to unmask]>
Date:	Mon, 15 Mar 2010 22:43:23 EDT
Content-Type:	text/plain
Parts/Attachments:	text/plain (20 lines)

Silica dust could act as a desiccant and abrasive.  In the brood nest,  it 
can cause aborting of brood.
 
When Mt St Helen's dusted the Pacific NW, I saw brood problems; especially  
in hives with bad boxes - lots of holes and cracks, where the dust could 
sift in  to the hive.
 
Now, St Helen's blanketed areas, like a snow storm; so the DOSE was very  
high.  On the other hand, desiccants have been used as insecticides.
 
Jerry

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