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Silica sand mining techniques

Jun 02, 2012 Silica Sand Mining in Wisconsin January 2012 . Wisconsin Department of Natural Resources . P.O. Box 7921 . Madison, WI 53707-7921 . 1 Silica Sand Mining in Wisconsin . ... techniques has also made it more economical to extract oil and gas from formations that were previously too expensive to mine. Because of this, there has been a large increase

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