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rock flour
(redirected from Rock dust)

    Also found in: Encyclopedia, Wikipedia 0.01 sec.
rock flour
n.
Finely ground rock particles produced by glacial abrasion. Also called glacier meal.
rock flour
n
(Earth Sciences / Geological Science) very finely powdered rock, produced when rocks are ground together (as along the faces of a moving fault or during the motion of glaciers) and are thus chemically unweathered
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The 2006 state health study found the Red Rock dust was a potential hazard for adults, teenagers and children - based on a worst-case, long-term exposure scenario.
Health fears prompt state to bury part of old rail bed by The Register-Guard (Eugene, OR)
The court is framed by treated 2-by-8s, the subsurface consists of 4 yards of rock dust and the top surface consists of 400 pounds of crushed sea shells (obtained from Southern States) which, as I understand, is the official surface for bocce ball courts.
I DID IT MYSELF: Bocce ball court, cedar deck, Adirondack chairs by Cindy Conley / Richmond Times-Dispatch
You can also use rock dust or powdered limestone instead of dirt if you like, but regular dirt from your yard will work fine.
Worm Compost Bin by Anthony Tripodi / Home improvement and landscaping community
 
 
 
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