This industry comprises establishments primarily engaged in setting and installing ceramic tile, stone (interior only), and mosaic and/or mixing marble particles and cement to make terrazzo at the job site. The work performed may include new work, additions, alterations, maintenance, and repairs. Illustrative Examples: Ceramic tile installation Mosaic work Mantel, marble or stone, installation Stone flooring installation Marble, granite, and slate, interior installation contractors Tile (except resilient) laying and setting Cross-References. Establishments primarily engaged in-- ? Exterior marble, granite, and slate work--are classified in Industry 238140, Masonry Contractors; ? Manufacturing precast terrazzo products--are classified in Industry 327390, Other Concrete Product Manufacturing; and ? Installing, without selling resilient floor tile--are classified in Industry 238330, Flooring Contractors.