ACO Amcol International Corp.

AMCOL International Corporation (NYSE: ACO) held its Annual Shareholders Meeting today. All Class III Directors were re-elected. They are: Jay D. Proops, William H. Schumann, III, and Paul C. Weaver. In addition, the shareholders ratified the Audit Committee's selection of Ernst & Young and approved the advisory resolution on executive compensation.

The Board of Directors has declared a quarterly dividend of $0.20 a share for the second quarter of 2013. The second quarter dividend is payable on July 9, 2013, to shareholders of record as of June 6, 2013.

AMCOL International, headquartered in Hoffman Estates, IL, develops and markets a wide range of mineral and technology based products and services for use in various industrial, environmental and consumer applications. AMCOL is the parent company of American Colloid Company, CETCO (Colloid Environmental Technologies Company), CETCO Oilfield Services Company and the transportation operations, Ameri-co Carriers, Inc. and Ameri-co Logistics, Inc. AMCOL's common stock is traded on the New York Stock Exchange under the symbol ACO. AMCOL's web address is www.amcol.com.

Contact: Don Pearson 847.851.1500