Non-metallic building materials, namely, blocks, bricks, posts, poles, beams, slabs, and panels; pipes made of concrete or cement; portable non-metallic buildings; aggregate used to form concrete; gravel; concrete; Portland cement; mortars; non-metallic wall panels

Non-metallic building materials, namely, blocks, bricks, posts, poles, beams, slabs, and panels; pipes made of concrete or cement; portable non-metallic buildings; aggregate used to form concrete; gravel; concrete; portland cement; mortars; non-metallic wall panels