- Sep 13, 2008
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Interesting tidbit from the United States Geological Survey.
The more I know, the more ignorant I become!
New USGS Map Helps Identify Where Pyrrhotite, a Mineral that Can Cause Concrete Foundations to Fail, May Occur
The more I know, the more ignorant I become!
New USGS Map Helps Identify Where Pyrrhotite, a Mineral that Can Cause Concrete Foundations to Fail, May Occur