| 331110 — Iron and Steel Mills and Ferroalloy Manufacturing | Not reported |
| 331210 — Iron and Steel Pipe and Tube Manufacturing from Purchased Steel | Not reported |
| 331221 — Rolled Steel Shape Manufacturing | Not reported |
| 331222 — Steel Wire Drawing | Not reported |
| 331313 — Alumina Refining and Primary Aluminum Production | Not reported |
| 331315 — Aluminum Sheet, Plate, and Foil Manufacturing | Not reported |
| 331318 — Other Aluminum Rolling, Drawing, and Extruding | Not reported |
| 331420 — Copper Rolling, Drawing, Extruding, and Alloying | Not reported |
| 331491 — Nonferrous Metal (except Copper and Aluminum) Rolling, Drawing, and Extruding | Not reported |
| 332111 — Iron and Steel Forging | Not reported |
| 332112 — Nonferrous Forging | Not reported |
| 332114 — Custom Roll Forming | Not reported |
| 332312 — Fabricated Structural Metal Manufacturing | Not reported |
| 332313 — Plate Work Manufacturing | Not reported |
| 332322 — Sheet Metal Work Manufacturing | Not reported |
| 332323 — Ornamental and Architectural Metal Work Manufacturing | Not reported |
| 332410 — Power Boiler and Heat Exchanger Manufacturing | Not reported |
| 332811 — Metal Heat Treating | Not reported |
| 332812 — Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers | Not reported |
| 332813 — Electroplating, Plating, Polishing, Anodizing, and Coloring | Not reported |
| 332911 — Industrial Valve Manufacturing | Not reported |
| 332996 — Fabricated Pipe and Pipe Fitting Manufacturing | Not reported |
| 332999 — All Other Miscellaneous Fabricated Metal Product Manufacturing | Not reported |
| 423510 — Metal Service Centers and Other Metal Merchant Wholesalers | Not reported |