Carolina Environmental Diversity Explorations
Clays of the Piedmont · By Dirk Frankenberg
Figure 14 shows a modern gas-fired kiln in a year-round pottery. If you look closely inside the opening, you can see the remains of one of the ceramic temperature recorders (pyrometric cones) from a recent firing. The small white object on the fourth shelf down from the top has a curved extension on its left side. This was once vertical, but collapsed as it was heated to its melting point. These sacrificial temperature recorders assure the potter that the kiln reached its designated temperature during firing.