Terrazzo, Magnesite Terrazzo. De-O-Tex, Rustic or rough washed for interior or exterior of buildings and any other kind of plastic mixtures composed of chips or marble, granite, blue stone, enamel, mother-of-pearl and all other kinds of chips when mixed with cement rubber, magnesium chloride or other binding material, when used on floors, ceilings, stairs, saddles or any other part of the interior or exterior of buildings and also other work not considered a part of the building, such as fountains, swimming pools, etc. Also, all other substitutes that may be applied under the same method as Terrazzo. All grinding and polishing shall be the work of the Terrazzo Workers.