This classification includes all of the specialty classes below:

1. (1) Boring;
2. (2) Cofferdams, dikes, levees, and canals;
3. (3) Dams;

4. (4) Marine, includes:

   1. (A) Wharves;
   2. (B) Docks;
   3. (C) Harbor improvements; and
   4. (D) Terminals;
5. (5) Mining, includes surface and underground mining;
6. (6) Oil and gas field construction;

7. (7) Oil refinery, power and energy plant construction, including:

   1. (A) Steel, alloy, ornamental, metal fabrication, and welding;
   2. (B) Tower and stack construction;
   3. (C) Foundation construction or drilling, pile driving, and stabilization;
   4. (D) Concrete;
   5. (E) Conveyors, material handling systems, cranes, and hoists;

   6. (F) Base and paving, including:

      1. (i) Base construction;
      2. (ii) Hot and cold mixes;
      3. (iii) Surface treatment;
      4. (iv) Asphalt; and
      5. (v) Concrete paving;
   7. (G) Grading and drainage (includes grading, drainage, pipe and structures, clearing, grubbing, and rip rap), excavation; and
   8. (H) Piping, process piping, valve repair, underground piping, cable, and trenching;
8. (8) Tunnels, shafts; and
9. (9) Underground piping, cable, and trenching.