19 Non-metallic construction materials, namely, mineral-based cementitious materials in the nature of portland, hydraulic, white, masonry, plastic, stucco, and oil well cement; non-metallic construction materials in the nature of other mineral-based cementitious materials and pozzolanic materials, namely, blast furnace slag, coal clinker and fly ash; non-metallic construction materials, namely, cement mixes and patches, concrete, mortar, stone, aggregate, sand, mosaic, tiles, lime, plaster, gypsum, gravel, brick, roofing tiles, floor tiles, masonry units, segmental retaining wall systems comprised primarily of cement, asphalt, and felt paper in the nature of nonwoven textile fabrics for use in construction; building materials made from concrete, namely, blocks, bricks, stones, walls, conduits, ducts, pavers, posts, pedestals, beams, partitions, barriers, pipes, modules, panels, columns, monuments, containers, curbs, bases in the nature of concrete blocks, slabs, fences, planks, non-metal water storage boxes and basins for collecting and storing water; limestone