Sand, gravel crushed stone, cement, gypsum for use in construction and road construction; building materials as finished products made of concrete, gypsum, clay, natural or artificial stone, construction and road construction purposes, included in this class, namely, concrete, plaster, lime building materials, heat-resistant cement, white cement, plaster, cast for building purposes in the nature of non-metal castings, ready-mixed concrete, building stone in the nature of surface coatings containing natural and artificial stones for use in constructing interior walls, facades, and floors, roofing cement, transportable precast concrete buildings and structural elements therefor, concrete poles for use in building and construction, concrete fence pickets, concrete poles for use as building materials, namely, for power lines, non-metallic building materials, namely, concrete, plaster, lime building materials, heat-resistant cement, white cement, plaster, cast for building purposes in the nature of non-metal castings, ready-mixed concrete, building stone in the nature of surface coatings containing natural and artificial stones for use in constructing interior walls, facades, and floors, roofing cement transportable precast concrete buildings and structural elements therefor, concrete poles for use as building materials, namely, for use in building and construction, concrete crash barriers not of metal for building purposes; natural and synthetic surface coatings in the form of panels and sheets, being building materials, namely, concrete panels