U.S. Silica Appoints Adam Yoxtheimer as Vice President and Chief Administrative Officer

FREDERICK, Md.--(BUSINESS WIRE)--Sep. 16, 2013-- U.S. Silica Holdings, Inc. (NYSE: SLCA) today announced that it has named Adam Yoxtheimer Vice President and Chief Administrative Officer of the Company, effective September 9, 2013.

Yoxtheimer joins U.S. Silica from Booz & Company, a leading global management consulting firm, where he served as a Principal in the Energy, Chemical and Utilities practice, assisting clients on a wide range of strategic initiatives including portfolio optimization, capital allocations and mergers and acquisitions. Yoxtheimer previously held a senior engineering position in the Information Systems & Global Solutions division of Lockheed Martin Corporation. He began his career as a systems engineer at BAE Systems based in Washington, D.C.

“I’m very excited to welcome Adam to the U.S. Silica team,” said Bryan Shinn, president and chief executive officer. “He brings an outstanding skill set and a wealth of talent plus extensive practical experiences in a number of disciplines that will help us reach our goal of doubling company earnings over the next three years.”

Commenting on his new role, Yoxtheimer added “I was attracted to U.S. Silica because of its unique value proposition, outstanding people and strong growth potential in the coming years. I am also very excited to work in a company that has a high-growth culture balanced with the security and stability of more than 100 years of history."

Yoxtheimer holds a bachelor’s degree from Princeton University, a master’s degree from University of Virginia and an MBA from the Darden Graduate School of Business, University of Virginia.

About U.S. Silica

U.S. Silica Holdings, Inc., a member of the Russell 2000, is one of the largest domestic producers of commercial silica, a specialized mineral that is a critical input into the oil and gas proppants end market. The company also processes ground and unground silica sand for a variety of industrial and specialty products end markets such as glass, fiberglass, foundry molds, municipal filtration and recreational uses. During its 100-plus year history, U.S. Silica Holdings, Inc. has developed core competencies in mining, processing, logistics and materials science that enable it to produce and cost-effectively deliver over 250 products to customers across these end markets. U.S. Silica Holdings, Inc. is headquartered in Frederick, Maryland.

Source: U.S. Silica Holdings, Inc.

U.S. Silica Holdings, Inc.
Michael Lawson
Director of Investor Relations and Corporate Communications
301-682-0304
lawsonm@ussilica.com