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Equity Investees (Tables)

12 Months Ended

Dec. 31, 2011

Equity method investments in and advances to affiliates and joint ventures

Information about our investments in and advances to affiliates and joint ventures at December 31, 2011 is as follows:

	Ownership Interest
Ashapura Volclay Limited		50	%
CETCO-Bentonit Uniao Technologias Ambientais Ltda.		50	%
Egypt Mining & Drilling Co. and Egypt Bentonite & Derivatives Co.		31	%
Egypt Nano Technologies Co.		27	%
Maprid Tech Cast, S.A. de C.V.		49	%
Volclay de Mexico, S.A. de C.V.		49	%
Volclay Japan Co., Ltd.		50	%

- Definition

Tabular disclosure of equity method investments in common stock. The disclosure may include: (a) the name of each investee or group of investments for which combined disclosure is appropriate, (2) the percentage ownership of common stock, (3) the difference, if any, between the carrying amount of an investment and the value of the underlying equity in the net assets and the accounting treatment of difference, if any, and (4) the aggregate value of each identified investment based on its quoted market price, if available.

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