| [331111] Iron and Steel Mills |
| [331112] Electrometallurgical Ferroalloy Product Manufacturing |
| [331210] Iron and Steel Pipe and Tube Manufacturing from Purchased Steel |
| [331221] Rolled Steel Shape Manufacturing |
| [331222] Steel Wire Drawing |
| [331311] Alumina Refining |
| [331314] Secondary Smelting and Alloying of Aluminum |
| [331316] Aluminum Extruded Product Manufacturing |
| [331319] Other Aluminum Rolling and Drawing |
| [332323] Ornamental and Architectural Metal Work Manufacturing |
| [332410] Power Boiler and Heat Exchanger Manufacturing |
| [332420] Metal Tank (Heavy Gauge) Manufacturing |
| [332431] Metal Can Manufacturing |
| [332439] Other Metal Container Manufacturing |
| [332510] Hardware Manufacturing |
| [332710] Machine Shops |
| [332721] Precision Turned Product Manufacturing |
| [332997] Industrial Pattern Manufacturing |
| [332999] All Other Miscellaneous Fabricated Metal Product Manufacturing |
| [333298] All Other Industrial Machinery Manufacturing |
| [333311] Automatic Vending Machine Manufacturing |
| [333511] Industrial Mold Manufacturing |
| [333512] Machine Tool (Metal Cutting Types) Manufacturing |
| [333513] Machine Tool (Metal Forming Types) Manufacturing |
| [333514] Special Die and Tool, Die Set, Jig, and Fixture Manufacturing |
| [333515] Cutting Tool and Machine Tool Accessory Manufacturing |
| [333516] Rolling Mill Machinery and Equipment Manufacturing |
| [333999] All Other Miscellaneous General Purpose Machinery Manufacturing |
| [334518] Watch, Clock, and Part Manufacturing |
| [334519] Other Measuring and Controlling Device Manufacturing |
| [334611] Software Reproducing |
| [334612] Prerecorded Compact Disc (except Software), Tape, and Record Reproducing |
| [334613] Magnetic and Optical Recording Media Manufacturing |
| [335129] Other Lighting Equipment Manufacturing |
| [336399] All Other Motor Vehicle Parts Manufacturing |
| [336411] Aircraft Manufacturing |
| [336412] Aircraft Engine and Engine Parts Manufacturing |
| [336413] Other Aircraft Parts and Auxiliary Equipment Manufacturing |
| [336414] Guided Missile and Space Vehicle Manufacturing |
| [336415] Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing |
| [336419] Other Guided Missile and Space Vehicle Parts and Auxiliary Equipment Manufacturing |
| [336510] Railroad Rolling Stock Manufacturing |
| [336611] Ship Building and Repairing |
| [336612] Boat Building |
| [339950] Sign Manufacturing |
| [339999] All Other Miscellaneous Manufacturing |