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Old 08-13-2010, 09:07 PM
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Sprinkus Sprinkus is offline
LawnSite Bronze Member
Join Date: Dec 2008
Location: San Antonio, TX
Posts: 1,963
Hmmmm, maybe expansive clay?
From what I understand clay can expand and contract by 40 to 50%.
Never seen it push stuff out of the ground like that around here.
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