U.S. Silica’s initial public offering was priced on January 31, 2012 with trading beginning on the New York Stock Exchange on February 1, 2012.

U. S. Silica Holdings, Inc. was incorporated in Delaware under the name GGC USS Holdings Inc. on November 14, 2008. That company changed its name to U. S. Silica Holdings, Inc. on July 8, 2011.

Fiscal year-end is December 31.

U.S. Silica’s common stock is traded on the New York Stock Exchange under the symbol “SLCA”.

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Broadridge Corporate Issuer Solutions, Inc.

Address:
1717 Arch Street, Suite 1300
Philadelphia, PA 19103
Telephone: (877) 830-4936
www.shareholder.broadridge.com

If you are a U. S. Silica Holdings, Inc. stockholder of record, contact our Transfer Agent, Broadridge Corporate Issuer Solutions, Inc. at (877) 830-4936 or at shareholder@broadridge.com.

US Silica pays a regular quarterly cash dividend of $0.0625 per share. Future dividends will be subject to Board approval.

Grant Thornton LLP.

On U.S. Silica’s website, you can view the company’s annual report and request printed copies by sending an email to IR@ussilica.com.

On U.S. Silica’s website, you can view the company’s proxy statement and request printed copies by sending an email to IR@ussilica.com

U.S. Silica’s SEC filings are available on the SEC filings section of the website. They are also available on the SEC’s website at http://www.sec.gov. If you would like a hard copy of any filing please contact us through our Information Request page.

U. S. Silica Holdings, Inc. provides Webcasts of these conference calls to ensure that all investors have timely and equal access to company information. To hear the conference call, log onto the Investor Relations page and follow the instructions. You must have Windows Media Player or QuickTime installed on your computer.

You can subscribe to U.S. Silica’s email alert system. The system provides various notification options regarding information on the company’s operations and financial performance.

U.S. Silica has a long-running history dating back over 100 years, when the Pennsylvania Glass Sand Corporation was founded.

U.S. Silica has about 825 employees.

Our management team reflects top leadership, talent and experience from all parts of the business: finance, operations, marketing and business management. For individual biographies please see the “Management” link on the Investor Relations page.

U.S. Silica has in place a series of measures to prevent accidents. Our equipment is subjected to frequent and rigorous inspections, maintenance and checks. We have an integrated safety management system and ensure all of our staff is thoroughly trained.

We are fully committed to minimizing any impact on the environment at every stage of mine development and operation. During the early stages of mine development, we plan for the ultimate closure of the mine, so we have a well-defined course of action to return the land to the community once our operations have concluded.

As a company, we support and follow the principles of sustainable development. That means we ensure our policies and actions have both environmental and economic value that will last well beyond the life of the mines we are operating, and in the communities where we do business. U.S. Silica publishes its Sustainability Report annually in the Spring.

U.S. Silica is one of the largest domestic producers of commercial silica, a specialized mineral used in a variety of end markets such as oil and gas proppants, glassmaking and chemical manufacturing.

Frac sand is used to stimulate and maintain the flow of hydrocarbons from horizontally drilled oil and gas wells. Horizontal drilling has become increasingly popular over the last few years as shale drilling techniques continue to develop.

U.S. Silica has facilities in 14 states situated on or near available mineral resources.