Name of the Company | Jurisdiction of Organization |
| ADAE, Cetco Sp. Z o.o., s.k.a. (Short Name: ADAE SKA ) | Poland |
| Alex Mining & Oil Service Company* | Egypt |
| Amcol Australia Pty. Ltd. | Australia |
| AMCOL CETCO do Brasil Serviços e Produtos de Construção Ltda. | Brazil |
| AMCOL Dongming Industrial Minerals Company Limited | China |
| AMCOL Health & Beauty Solutions, Incorporated | Delaware |
| AMCOL (Holdings) Ltd. | UK |
| Amcol International B.V. | Netherlands |
| AMCOL International Corporation | Delaware |
| AMCOL International Holdings Corporation | Delaware |
| Amcol International (Thailand) Limited | Thailand |
| AMCOL Korea Limited | S. Korea |
| Amcol Mauritius | Mauritius |
| Amcol Minchem Jianping Co., Ltd | China |
| Amcol Mineral Madencilik Sanayi ve Ticaret A.S. (Turkey) | Turkey |
| Amcol Minerals EU Limited | UK |
| Amcol Minerals Europe Limited | UK |
| Amcol Minerals and Materials (India) Private Limited | India |
| AMCOL (Tianjin) Industrial Minerals Company Limited | China |
| AMCOL Tianyu Industrial Minerals Co. Ltd. | China |
| AMCOL de México, S.A., de C.V. | Mexico |
| American Colloid Company | Delaware |
| Ameri-Co Carriers, Inc. | Nebraska |
| Ameri-Co Logistics, Inc. | Nebraska |
| APP China Specialty Minerals Pte Ltd. | Singapore |
| ASMAS Agir Sanayi Malzemeleri Imal ve Tic. A.S (has branch office in Bahrain). | Turkey |
| Barretts Minerals Inc. | Delaware |
| Batlhako Mining Ltd. | South Africa |
| Bonmerci Investments 103 (Pty) Ltd. | South Africa |
| CCS, Cetco Sp. Z o.o., s.k.a. | Poland |
| Centre International de Couchage CIC Inc. | Canada |
| CETCO Czech S.R.O. | Czech Rep |
| CETCO do Brasil Serviços E Produtos Minerais E De Meio-Ambiente Ltda. | Brazil |
| CETCO Energy Services Company LLC | Delaware |
| CETCO Energy Services de México, S.A. de C.V. | Mexico |
| CETCO Energy Services Limited | UK |
| CETCO Energy Services (Malaysia) Sdn. Bhd. | Malaysia |
| CETCO (Europe) Ltd(has branch offices in Ireland, Sweden, Norway, Denmark) | UK |
| CETCO Germany GmbH | Germany |
| CETCO Iberia S.L. | Spain |
| CETCO Iberia Construcciones y Servicios S.L. | Spain |
| CETCO Korea , Ltd | S. Korea |
| CETCO Lining Technologies India Private Limited | India |
| CETCO Oilfield Services Asia Ltd. | Malaysia |
| CETCO Oilfield Services Company Limited | Canada |
| CETCO Oilfield Services Company Nigeria Limited | Nigeria |
| CETCO Oilfield Services Pty. Ltd. | Australia |
| CETCO Poland, Cetco Sp. Zo.o. S.K.A. (aka CETCO Poland) | Poland |
| CETCO Poland Fundusz Investycyjny Zamkniety Aktywów Niepublicznych (aka CETCO Investment Fund) | Poland |
| CETCO Sp. Zo.o. | Poland |
| CETCO Technologies (Suzhou) Co., Ltd. (China) | China |
| Colloid Environmental Technologies Company LLC (Has a branch in Canada) | Delaware |
| Comercializadora y Exportadora CETCO Latino América Limitada (aka CVE CETCO Latino America) | Chile |
Construction Technologies Poland Spólka Z Ograniczoną Odpowiedzialności (aka CT Poland SP Z.O.O.) | Poland |
| COS Employment Services de México, S.A. de C.V. | Mexico |
| Double A Specialty Minerals Co., Ltd. | Thailand |
| Egypt Nano-Technologies Company S.A.E.* | Egypt |
| Egypt Mining & Drilling Chemical Company S.A.E.* | Egypt |
| Egypt Bentonite & Derivatives Company S.A.E.* | Egypt |
| Gold Lun Chemicals (Zhenjiang) Co., Ltd. . | China |
| Gold Sheng Chemicals (Zhenjiang) Co., Ltd. | China |
| Gold Zuan Chemicals (Suzhou) Co., Ltd. | China |
| Green Roof Insurance Co LLC | Vermont |
| Hi-Tech Specialty Minerals Company Limited | Thailand |
| Ingeniería y Construcción CETCO ICC Limitada | Chile |
| Maprid Tel Cast de S.A. de C.V.* | Mexico |
| Minerals Technologies do Brasil Comercio é Industria de Minerais Ltda. | Brazil |
| Minerals Technologies Europe S.A. (has branch office in France) | Belgium |
| Minerals Technologies Holding China Co., Ltd. | China |
| Minerals Technologies Holdings Inc. | Delaware |
| Minerals Technologies Holdings Ltd. | United Kingdom |
Minerals Technologies India Private Limited Minerals Technologies Mexico Holdings, S. de R. L. de C.V. | India Mexico |
| Minerals Technologies South Africa (Pty) Ltd. | South Africa |
| Mintech Canada Inc. | Canada |
| Mintech Japan K.K. | Japan |
| Minteq Australia Pty Ltd. | Australia |
| Minteq B.V. | The Netherlands |
| Minteq Europe Limited. | Ireland |
| Minteq International GmbH (has branch office in Schongau) | Germany |
| Minteq International Inc. | Delaware |
| Minteq International (Suzhou) Co., Ltd. | China |
| Minteq Italiana S.p.A. | Italy |
| Minteq Korea Inc* | Korea |
| Minteq Magnesite Limited (has a branch office in Spain) | Ireland |
| Minteq Shapes and Services Inc. | Delaware |
| Minteq UK Limited. | United Kingdom |
| Montana Minerals Development Company | Montana |
| MTI Bermuda L.P. | Bermuda |
| MTI Holding Singapore Pte. Ltd. | Singapore |
| MTI Holdco I LLC | Delaware |
| MTI Holdco II LLC | Delaware |
| MTI Netherlands B.V. | Netherlands |
| MTI Technologies UK Limited | United Kingdom |
| MTI Ventures B.V. | Netherlands |
| MTX Singapore Holdings Pte. Ltd. | Singapore |
| Nanocor LLC | Delaware |
| Performance Minerals Netherlands C.V. | Netherlands |
| PT. CETCO Oilfield Services Indonesia | Indonesia |
| PT Sinar Mas Specialty Minerals | Indonesia |
| Rayagada Minerals & Chemicals Private Limited | India |
| SMI NewQuest India Private Limited | India |
| SMI Poland Sp. z o.o. | Poland |
| Specialty Minerals Bangladesh Limited | Bangladesh |
| Specialty Minerals Benelux SA | Belgium |
| Specialty Minerals (Changshu) Co., Ltd. | China |
| Specialty Minerals do Brasil Participacoes Ltda. | Brazil |
| Specialty Minerals FMT K.K. | Japan |
| Specialty Minerals France S.A.S. . | France |
| Specialty Minerals (Fuyang) Cp., Ltd. | China |
| Specialty Minerals Inc. | Delaware |
| Specialty Minerals India Holding Inc. | Delaware |
| Specialty Minerals International Inc. | Delaware |
| Specialty Minerals Malaysia Sdn. Bhd. | Malaysia |
| Specialty Minerals (Michigan) Inc. | Michigan |
| Specialty Minerals Nordic Oy Ab | Finland |
| Specialty Minerals (Portugal) Especialidades Minerais, S.A. | Portugal |
| Specialty Minerals-Qishun (Nanning) Co., Ltd. | China |
| Specialty Minerals Slovakia, spol. sr.o. | Slovakia |
| Specialty Minerals South Africa (Pty) Limited | South Africa |
| Specialty Minerals (Thailand) Limited | Thailand |
| Specialty Minerals UK Limited | United Kingdom |
| Specialty Minerals (Wuzhi) Co., Ltd. | China |
| Specialty Minerals (Yanzhou) Co., Ltd. | China |
| Volclay de México, S.A. de C.V.* | Mexico |
| Volcay International LLC | Delaware |
| Volclay Japan Co., Ltd. | Japan |
| Volclay South Africa (Proprietary) Limited | South Africa |
| Volclay Trading Co. | South Africa |
