cement mixes, refractory mortar and fire brick, refractory brick; monolith refractory composition, namely, casting and gunning mixes; refractory gunning mix; refractory brick holding devices, namely, clips, clamps and spacers; refractory composition additives, namely, abrasion stabilizers; high aluminia refractory casting mixes; refractory bonding materials, namely, mortar-mix; refractory ramming mix; castable refractory spray mix; castable refractory mixes; refractory casting mix and bonding mortar