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3312-01 Steel Mills
3312-02 Tubing
3312-03 Expanded Metals
3312-04 Steel Processing
3312-05 Iron Work Manufacturers
3312-06 Tubing Metal Fabricators
3312-07 Wheels Manufacturers
3312-08 Wire Forms Manufacturers
3312-09 Wire Products Manufacturers
3312-10 Metals Corrugated
3312-11 Rails & Accessories
3312-12 Stainless Steel
3312-13 Tin Plate
3312-98 Steel Works/Blast Furnaces/Rolling Mls
3313-01 Molybdenum
3313-98 Electrometallurgical Prods Except Steel
3315-01 Wire Manufacturers
3315-02 Fence Posts & Fittings Manufacturers
3315-03 Wire Form & Specialties
3315-98 Steel Wiredrawing & Steel Nails & Spikes
3316-01 Steel Bar, Sheet, Strip, Tube Etc
3316-98 Cold-Rolled Steel Sheet Strip & Bars
3317-98 Steel Pipe & Tubes
3321-01 Foundries Iron
3321-02 Foundries Gray Iron
3321-03 Manhole Covers
3321-98 Gray & Ductile Iron Foundries
3322-01 Foundries Malleable Iron
3322-98 Malleable Iron Foundries
3324-01 Investment Castings
3324-98 Steel Investment Foundries
3325-01 Castings Ferrous Metals
3325-02 Foundries Steel
3325-03 Foundries
3325-99 Steel Foundries Nec
3331-98 Primary Smelting & Refining of Copper
3334-98 Primary Production of Aluminum
3339-01 Smelters & Refiners-Precious Metals
3339-02 Smelters & Refiners-Base Metals
3339-98 Primary Smelting/Refng-Nonferrous Mtl
3341-01 Babbitting
3341-02 Silver Recovery
3341-98 Secondary Smelting/Refining-Nonferrous
3351-01 Metal Shapes-Extruded
3351-98 Rolling Drawing & Extruding of Copper
3353-98 Aluminum Sheet Plate & Foil
3354-98 Aluminum Extruded Products
3355-01 Aluminum Fabricators
3355-99 Aluminum Rolling & Drawing Nec
3356-01 Lead Products
3356-02 Solder
3356-03 Metal Rolling & Forming
3356-98 Rolling Drawing Extrdng Non-Ferrous Mtl
3357-01 Fiber Optics Equipment & Systems
3357-02 Cable
3357-03 Cables Insulated
3357-98 Drawing & Insulating of Nonferrous Wire
3363-98 Aluminum Die Castings
3364-98 Nonferrous Die Castings-Ex Aluminum
3365-01 Foundries Aluminum Brass Bronze & Etc
3365-02 Castings Aluminum
3365-03 Cooking Utensils Manufacturers
3365-98 Aluminum Foundries
3366-01 Bronze
3366-02 Brass
3366-98 Copper Foundries
3369-01 White Metal Castings
3369-02 Castings
3369-03 Castings Metals
3369-07 Foundries Magnesium
3369-98 Nonferrous Foundries Ex Aluminum/Copper
3398-01 Heat Treating Metal
3398-02 Shot Peening
3398-98 Metal Heat Treating
3399-01 Balls Steel Bronze Etc
3399-99 Primary Metal Products Nec