Minerals Technologies Extends Tender Offer for Outstanding Shares of AMCOL International - Seite 2

The information agent for the tender offer is Innisfree M&A Incorporated (the "Information Agent"). AMCOL stockholders who need additional copies of the Offer to Purchase, Letter of Transmittal or related materials or who have questions regarding the tender offer should contact the Information Agent toll-free at [phone].

American Stock Transfer & Trust Company, LLC is acting as depositary for the tender offer. Lazard Frères & Co. LLC is acting as dealer manager for the tender offer, and Cravath, Swaine & Moore LLP is acting as legal counsel to Minerals Technologies.

About Minerals Technologies

New York-based Minerals Technologies Inc. is a resource- and technology-based growth company that develops, produces and markets worldwide a broad range of specialty mineral, mineral-based and synthetic mineral products and related systems and services. The company recorded sales of $1.02 billion in 2013.

About AMCOL

AMCOL, headquartered in Hoffman Estates, IL., USA, produces and markets a wide range of specialty minerals and materials used for industrial, environmental and consumer-related applications. AMCOL is the parent of American Colloid Co., CETCO (Colloid Environmental Technologies Company), CETCO Oilfield Services Company and the transportation operations, Ameri-co Carriers, Inc. and Ameri-co Logistics, Inc.

NOTICE TO INVESTORS

This press release is neither an offer to purchase nor a solicitation of an offer to sell shares of AMCOL's common stock. MTI has filed with the SEC a tender offer statement on Schedule TO regarding the tender offer described herein, and AMCOL has filed with the SEC a solicitation/recommendation statement on Schedule 14D-9 regarding such tender offer. AMCOL's stockholders are strongly advised to read these tender offer materials carefully and in their entirety, as they may be amended from time to time, because they contain important information about such tender offer that AMCOL's stockholders should consider prior to making any decisions with respect to such tender offer. Stockholders of AMCOL may obtain a free copy of these documents at the website maintained by the SEC at www.sec.gov or by directing a request to the Information Agent at [phone].