This industry comprises establishments primarily engaged in pouring and finishing concrete foundations and structural elements. This industry also includes establishments performing grout and shotcrete work. The work performed may include new work, additions, alterations, maintenance, and repairs. Illustrative Examples: Concrete pouring and finishing Gunite contractors Concrete pumping (i.e., placement) Mud-jacking contractors Concrete work (except paving) Shotcrete contractors Footing and foundation concrete contractors Cross-References. Establishments primarily engaged in--