- Primary Metal Manufacturing[331] Sector: Manufacturingdata applied from 6,488 establishments

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- 3311 Iron and Steel Mills and Ferroalloy Manufacturing
- 331111 Iron and Steel Mills
- 3312 Steel Product Manufacturing From Purchased Steel
- 331210 Iron and Steel Pipe and Tube Manufacturing From Purchased Steel
- 33122 Rolling and Drawing of Purchased Steel
- 331221 Rolled Steel Shape Manufacturing
- 331222 Steel Wire Drawing
- 3313 Alumina and Aluminum Production and Processing
- 331312 Primary Aluminum Production
- 331315 Aluminum Sheet, Plate, and Foil Manufacturing
- 331316 Aluminum Extruded Product Manufacturing
- 331319 Other Aluminum Rolling and Drawing
- 3314 Nonferrous Metal (Except Aluminum) Production And Processing
- 33141 Nonferrous Metal (Except Aluminum) Smelting And Refining
- 331411 Primary Smelting and Refining of Copper
- 331419 Primary Smelting and Refining of Nonferrous Metal (Except Copper And Aluminum)
- 33142 Copper Rolling, Drawing, Extruding, and Alloying
- 331421 Copper Rolling, Drawing, and Extruding
- 331423 Secondary Smelting, Refining, and Alloying of Copper
- 33149 Nonferrous Metal (Except Copper And Aluminum) Rolling, Drawing, Extruding, And Alloying
- 331491 Nonferrous Metal (Except Copper And Aluminum) Rolling, Drawing, And Extruding
- 331492 Secondary Smelting, Refining, and Alloying of Nonferrous Metal (Except Copper And Aluminum)
- 3315 Foundries
- 33151 Ferrous Metal Foundries
- 331511 Iron Foundries
- 331512 Steel Investment Foundries
- 331513 Steel Foundries (Except Investment)
- 33152 Nonferrous Metal Foundries
- 331521 Aluminum Die-Casting Foundries
- 331522 Nonferrous (Except Aluminum) Die-Casting Foundries
- 331524 Aluminum Foundries (Except Die-Casting)
- 331525 Copper Foundries (Except Die-Casting)
- 331528 Other Nonferrous Foundries (Except Die-Casting)
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