SUBSTANCE CONSISTING ESSENTIALLY OF CALCITE AND WOLLASTONITE IN APPROXIMATE 5-1 PROPORTIONS, RESPECTIVELY, FOR USE IN THE CONSTRUCTION TRADE AS AN ADDITIVE TO BUILDING MATERIALS, NAMELY, STUCCO, PLASTER, MORTAR, GROUT, BRICKS, CONCRETE BLOCKS AND CONCRETE TILES, AND AS A SURFACE TREATMENT FINISH PREPARATION FOR THE EXTERIOR OF BUILDING SURFACES
Chemicals