Exhibit 21
AMCOL INTERNATIONAL CORPORATION
SUBSIDIARY LISTING
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COMPANY NAME COUNTRY STATE OWNERSHIP %
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AMCOL Europe Limited England 100
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AMCOL Health & Beauty Solutions, Inc. USA DE 100
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AMCOL Holdings B.V. Netherlands 100
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AMCOL (Holdings) Ltd. England 100
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AMCOL Holdings Canada Ltd. Canada Ontario 100
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AMCOL Specialties Holdings, Inc. USA DE 100
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American Colloid Company USA DE 100
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Ameri-Co Carriers, Inc. USA NE 100
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Ameri-Co Logistics, Inc. USA NE 100
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Ashapura Minechem Ltd. India 20
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Ashapura Volclay Private Limited India 50
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Baker Sillavan Limited England 50
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CETCO (Europe) Limited England 100
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CETCO Australia Pty. Ltd. Australia 100
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CETCO Holdings B.V. Netherlands 100
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CETCO Korea Ltd. Korea 100
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CETCO Oilfield Services Company USA DE 100
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CETCO-POLAND Sp. z o. o Poland 100
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CETCO Technologies (Suzhou) Co. Ltd. China 100
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Colin Stewart Minchem Limited England 100
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Colloid Environmental Technologies Company USA DE 100
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Egypt Bentonite & Derivatives Company Egypt 25
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Egypt Mining & Drilling Chemicals Company Egypt 25
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Lafayette Well Testing, Inc. USA LA 100
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Montana Minerals Development Company USA MT 100
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Nanocor, Inc. USA DE 100
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Nanocor, Ltd. England 100
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Nissho Iwai Bentonite Co., Ltd. Japan 19
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Silgel Packaging Limited England 100
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Volclay de Mexico, S.A. de C.V. Mexico 49
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Volclay Dongming Industrial Minerals Co., Ltd. China 96
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Volclay Holdings B.V. Netherlands 100
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Volclay International Corporation USA DE 100
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Volclay Korea Ltd. Korea 100
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Volclay MinChem Co. Ltd. China 100
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Volclay Pty. Ltd. Australia 100
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Volclay Siam Ltd. Thailand 100
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60