Hammill & Gillespie

Hammill & Gillespie is one of the oldest and most respected ceramic suppliers in North America.  Established in 1848, H&G has provided specialty clays and mineral to the art and pottery market for over 150 years.  We are best known for introducing and providing the pottery market with Grolleg, Barnard/Blackbird, Albany Slip, Cornwall Stone, Spanish Red Iron Oxide, and Gillespie Borate.  H&G strives to identify and provide the same specialty clays and minerals suitable for potters that have been mined and marketed to industry. 

http://www.hammgill.com/ceramic-art-pottery