The Brainerd (Minn.) Brick Co. has its first kiln of brick ready for the market. They are very satisfactory to the owners. (Clay Record, Clay Record Publishing Company, Chicago, IL, September 30, 1907, Volume XXXI, Number 6, Page 36)
Page 147. In 1886, at about the time the clay along the river was abandoned, an outcrop of similar laminated material was found a few hundred yards to the east, where a tributary stream had eroded the overlying sand. A brickyard is now in operation on this deposit, and the mate-
Page 148. rial found is essentially similar in character to that described above, although its upper part has been leached and oxidized yellow. It seems somewhat more sandy and burns to a red brick. The bottom clay, not used at present, will burn buff. The clay is probably available without too much overburden under about 200 acres of land. The plant has a capacity of 20,000 brick a day, but works only half-day shifts. It produces sand-mold common brick. Wood is used for fuel. The clay would probably yield hollow brick and fireproofing if properly treated. (Clays and Shales of Minnesota, Frank F. Grout with contributions by E. K. Soper, United States Geological Survey, Government Printing Office, Washington, D.C., 1919)