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UNIMIN CORPORATION

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UNEARTHING SUCCESS

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ENERTECH

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UNIMIN CORPORATION

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CERAMIX

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UNIMIN CORPORATION

Nov 4, 2008

SILEX

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UNIMIN CORPORATION

Apr 22, 2008

GREEN CLEAN

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UNIMIN CORPORATION

Oct 31, 2006

FARROW GREEN CLEAN

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TOURNAMENT BLEND

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UNIMIN CORPORATION

Dec 2, 2003

SILEX

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UNIMIN CORPORATION

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PATRIOT PROPPANTS

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UNIMIN CORPORATION

Oct 5, 2010

TURBOPROP

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HIWHITE

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UNIMIN CORPORATION

Sep 27, 2011

HI-WHITE

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UNIMIN CORPORATION

Feb 25, 2003

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UNIMIN CORPORATION

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ATLAS

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UNIMIN CORPORATION

Sep 2, 2003

SNO BRITE

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UNIMIN CORPORATION

Apr 9, 2002

APEX

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Jun 17, 2003

AEROGEM

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UNIMIN CORPORATION

Jun 17, 2003

MARQUIS

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UNIMIN CORPORATION

May 10, 2005

CENTURY

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UNIMIN CORPORATION

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CRYSTAL

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UNIMIN CORPORATION

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PREMIER

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UNIMIN CORPORATION

Jan 15, 2002