Paragraph 45 F1

In this Chapter—

• “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,

• “retail sale” means sale to the final customer.