BRIEF-U.S. Silica announces retirement of CFO

Oct 1 (Reuters) - U.S. Silica Holdings Inc :

* Announces retirement of CFO, appointment of vice president of Finance and

resignation of CAO

* Says CFO William A. White to retire

* CFO retirement effective as of December 31, 2012

* Says donald a. merril will assume the chief financial officer position upon

white's retirement

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