Paint Manufacturers' Association of the United States. Scientific Section · Philadelphia, PA : Paint Manufacturers Association, Scientific Section · leaf 655
MINERAL BLACK. Mineral black is a pigment made by grinding a black form of slate. It contains a comparatively low percentage of carbon and consequently has low tinting value. It finds use as an inert pigment in compounded paints, especially for machine fillers. The pigment has a flocculent appear-…
Paint · Painting, Industrial · Corrosion and anti-corrosives
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
