73708376
Jan 29, 1988
Oct 17, 1989
FLOURSPAR FOR USE AS A FLUXING AGENT AND A SOURCE OF FLUORINE; OTHER NON-METALLIC FLUXES FOR STEEL INDUSTRY USES, ABSORBENT CLAY AND CLAY COMPOSITION FOR AGRICULTURAL, OIL AND GREASE ABSORPTION, SOIL AMENDMENT OR CONDITIONING, AND CAT LITTER USES; [ CALCIUM BENTONITE FOR BONDING FOUNDRY SAND; FOUNDRY SAND ADDITIVES, BLENDS OF BENTONITE, POWERED COAL, CEREAL, CELLULOSE AND FIRECLAY FOR USE IN FOUNDRY GREEN SAND MOLDS; FOUNDRY SODIUM SILICATE CORE BINDERS; FOUNDRY CORE PASTE; ] FOUNDRY SLAG CONDITIONERS; MINERAL SOIL SUPPLEMENTS AND SOIL ADDITIVES; [ FOUNDRY MOLDING SANDS ]
ChemicalsMETALLIC ALLOYS, NAMELY FERROSILICON, FERROCHROME, FERROMANGANESE, [ OLIVINE, ] FERROVANADIUM, NICKEL; METALLIC ORES
Metal Goods[ COMPUTER PROGRAM FOR CONTROLLING EFFICIENCY OF GREEN SAND IN FOUNDRY MOLDING PRACTICES ]
Electrical and Scientific Apparatus[ SAND BLASTING AGGREGATES; REFRACTORY BLOCKS, BRICKS, CASTABLE MIXES, FURNACE LININGS, MORTARS, AND SHAPER ]
Nonmetallic Building Materials