The thickness of the cement foundation will vary with geographic location. The kiln under construction here is down three feel and reinforced with steel wire. Since the life of a salt kiln is approximately 100 firings medium quality hard fire brick was used.
The original object was scanned as a TIFF file on a Nikon Coolscan 4000 film scanner at approximately 4000 pixels on the long dimension. A 300 ppi JPEG file limited to 1024 pixels on the long dimension was then added to the CONTENTdm database.