PART B
(a)
Firing heavy clay goods or refractory goods other than heavy clay goods in a kiln where the activity does not fall within a description in Part A of this Section.
(b)
Vapour glazing earthenware or clay with salts.
Interpretation of Part B
In this Part–
“clay” includes a blend of clay with ash, sand or other materials;
“refractory” means refractory material (such as fireclay, silica, magnesite, chrome-magnesite, sillimanite, sintered alumina, beryllia and boron nitride) which is able to withstand high temperatures and to function as a furnace lining or in other similar high temperature applications.