Can Clay Corporation
Can Clay is a manufacturer of vitrified clay pipe for sanitary sewer, storm sewers installed using open trench, microtunneling, pipe bursting. Also fireplace throats, flue lining, chimney tops, filter block, wine racks, ISO 9002 certified quality system,
http://www.canclay.com/

Clays and Clay Minerals
Web site for Clays and Clay Minerals.
http://ccm.geoscienceworld.org/

Koi Clay
Bentonite / montmorillonite clay replaces the minerals used up by the life in your pond. Watch your koi thrive on koi clay.
http://www.koiclay.com

Redland Clay Tile
Manufacturer of clay roofing tiles.
http://www.redlandclaytile.com/

Clay Minerals
Web site for Clay Minerals.
http://claymin.geoscienceworld.org

National Clay pipe Institute [NCPI]
National Clay Pipe Institute is a not for profit trade association comprised of manufacturers of vitrified clay pipe.
http://www.ncpi.org/

Southern Clay Products
Southern Clay Products, a subsidiary of Rockwood Specialties, Inc. produces and markets an extensive range of natural and synthetic additives that can be used in both water-based and solvent-based formulations. A few of the application areas that have seen significant benefits as a result of using our additives are: Paints and Coatings, Consumer Care Products, Inks, Ceramics and Refractories, Drilling Fluids, Greases, and Polyester and Epoxy Composites.
http://www.nanoclay.com/

Superior Clay Corporation
Manufacture Rumford fireplaces, masonry chimneys, chimney pots, and clay bake ovens. Features plans and instructions and listing of specifiers.
http://www.rumford.com/

Old Hickory Clay Company
Produces ball clay for the ceramics industry as well as hobby ceramics. Includes descriptive data sheets.
http://www.oldhickoryclay.com/

The Irish Clay Pipe
About clay pipe production in the village of Knockcroghery in County Roscommon, Ireland. Includes links to retailers.
http://www.ireland-facts.info/clay-pipe/