31. The seat earths of the seams yielded ganister ( needed for furnace linings ) and fire clay . 32. Fire bricks made from fire clay deposits near the Kamo mines supported a brick works over several decades. 33. Their many voids comprise a greater proportion of the volume than the solid, thin walls of fired clay . 34. Beginning in the late 18th century, potters in Scotland and northern England began manufacturing vessels of yellow-firing clay . 35. The full set they describe adds two stone crosses and a fired clay heart to the Peralta Stones. 36. When the thus fired clay separated from the basket, it would become a usable clay roasting pan in itself. 37. You would miss a lot if you didn't take the lid off Scott Young's raku-fired clay box on pedestal. 38. Especially the youngsters who were elbow-deep in a huge box of the fire clay sent over by Harbison Walker. 39. As material for walls, its strength is less than that of fired clay bricks, but sandcrete is considerably cheaper. 40. Earth structure materials may be as simple as mud, or mud mixed with straw to make fired clay bricks.
