American Gilsonite Completes Houston Office Expansion

HOUSTON, TEXAS – July 23, 2013 – American Gilsonite Company, Inc. (“American Gilsonite”, or “AGC”), the world’s primary supplier of Gilsonite^® uintaite, announced the completion of its Houston office expansion. Major growth in the energy sector prompted the company to establish a significant presence in Houston to better serve the expanding customer base.

“As a strategic supplier to the world largest oil and gas service companies, we felt that it was imperative to expand our commitment to this crucial end market,” said Ted Stevens, President and Chief Executive Officer of American Gilsonite. “We are excited about this important milestone and look forward to the continued expansion of our Houston team.”

After spending more than 30 years in both operations and sales with M-I Swaco, Vice President of Sales and Marketing Bill Dobbs, joined American Gilsonite two years ago to lead the build-out of the AGC Houston team. “Establishing a robust presence in Houston is essential to providing excellent customer service to our core oilfield customers”, said Mr. Dobbs. “With the additions of Technical Director Dario Montes from NOV and M-I Swaco, and Sales Manager for Oilfield Products Matt Garner from Baker Hughes, we have the technical and commercial foundation to provide value to our customers.”

The Houston office is located near the Galleria at 1717 St. James Place, Suite 600.

About American Gilsonite Company. (www.americangilsonite.com)

American Gilsonite is the world’s primary miner and processor of Gilsonite^® uintaite, a naturally occurring hydrocarbon resin used as a premium performance additive in oilfield and specialty industrial applications. AGC and its predecessor companies have been mining Gilsonite^® in Eastern Utah since 1888.