non-metallic building materials, namely, regular concrete, masonry blocks, architectural concrete masonry blocks, splitface masonry blocks, groundface masonry blocks, concrete brick, concrete landscaping block, clay and concrete segmental retaining walls, architectural design slates, bricks, brick slabs, brick tiles, concrete blocks, concrete slabs, clay slabs, clay tiles, ceramic tiles, marble tiles; Portland cement, masonry cement, concrete, stone aggregate, ready-mix concrete, clay and con...