FOUNDRY SUPPLIES-NAMELY, BENTONITE, CHALK, FIREPROOF CLAY, COAL, COKE, PITCH, CHARCOAL, GRAPHITE AND MIXTURES THEREOF, FOR USE IN FOUNDRIES AND STEEL PLANTS AS MOLDING SAND ADDITIVES

POWDER AND PLATE MATERIALS USED IN MOLDS TO CONTROL HEAT LOSS OF MOLTEN METALS DURING SOLIDIFICATION