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Final Report on the Safety Assessment of AluminumSilicate, Calcium Silicate, Magnesium Aluminum Silicate, Magnesium Silicate, Magnesium Trisilicate, Sodium Magnesium Silicate, Zirconium Silicate, Attapulgite, Bentonite, Fuller’s Earth, Hectorite, Kaolin,Lithium Magnesium Silicate, Lithium MagnesiumSodium Silicate, Montmorillonite, Pyrophyllite,and Zeolite. International Journal of Toxicology, 22(Suppl. 1):37–102, 2003.