Chemicals and minerals for use in industry, namely, clay, talc, magnesium silicate and chlorite; minerals for use in industry, namely, clay, talc, magnesium silicate and chlorite; chemical preparations for use in the manufacture of paints, pigments, coatings and resins; mineral substances in the nature of barrier materials, namely, minerals used as an additive in paints, pigments, coatings, resins, varnishes and lacquers; minerals used as a filler in plastics, paints, pigments, coatings, resi...