1 SIC industry for “naics:3331”
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SIC (Standard Industrial Classification) classifies businesses by their primary activity. It is used for marketing, business data, research, and regulatory filings. Learn about SIC →
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3331 Primary Smelting and Refining of Copper
Smelting copper from the ore, and in refining copper by electrolytic or other processes.
3 U.S. business records
- 3331-98 — Primary Smelting-Refining-Copper (Manufacturers)4 business records companies
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Six-digit SIC Marketing Level classifications build on the four-digit SIC framework to identify more specific business activities for precise industry targeting.
- 3331-98 — Primary Smelting-Refining-Copper (Manufacturing)4 business records companies