the university. "The School of Mines experimented with and developed many clays and glazes. Clays used included Dickinson, Beulah, Hebron, Mandan, Weigel, Red and Grey Ross, McCurdy, Hettinger, and bentonite. Much North Dakota pottery was made from a mix of Hettinger, Mandan, Red Ross, and Beulah clay. Bentonite clays, which fired to a rich burnt sienna color, were used primarily for pottery with Indian motifs. An advantage of bentonite was that it could have glazes applied to green ware and be finished in one firing." (UND Pottery by Bob Barr) In 1910, a Ceramics Department was officially established at the University. Margaret Kelly Cable was hired to head this Department, a position she held for the next 39 years. Under her direction, native clays were tested, glazes perfected, and ceramics classes were instituted at UND. The University became the training ground for many of the potters that built an industry in the state in later years. Many talented instructors worked at the University at various times. Among them were Margaret's sister, Flora Cable Huckfield, Frieda Hammers, Margaret Pachl and Julia Mattson. The cobalt blue "School of Mines" seal was used on UND pottery beginning in 1913. It was retired the year Julia Mattson retired in 1963. After 1963, only student or instructor names appear on UND pottery. Many of the UND pieces also bear a name or initial of the student or instructor responsible for the item. Others simply have an identification number of the mold used for that particular piece of pottery. Some of the many UND products include vases of all types, dishes, tea sets, decorative tiles, candleholders, animal figurines, book ends, curtain pulls, and ashtrays among others. Advertising pieces were also made for groups such as the 4H Clubs, the American Legion, the Daughters of Norway and others. Dickinson Clay Products Company Seeing a need for winter work at the Dickinson Clay Products Company, Howard Lewis started pottery production in 1934 to keep the plant running year round. In 1935 he was joined by Charles Grantier who had trained under Margaret Cable at the University of North Dakota and who was very familiar with the properties of North Dakota Clay. The pottery produced by this company was known as Dickota, usually scratched or incised on the bottom of the pottery pieces. In addition a gold and silver sticker with the Dickota name was placed on some items