EPA Environmental Dataset Gateway
Jump to main content
United States Environmental Protection Agency
NAICS 331: Industries in the Primary Metal Manufacturing subsector smelt and/or refine ferrous and nonferrous metals from ore, pig or scrap, using electrometallurgical and other process metallurgical techniques. Establishments in this subsector also manufacture metal alloys and superalloys by introducing other chemical elements to pure metals. The output of smelting and refining, usually in ingot form, is used in rolling, drawing, and extruding operations to make sheet, strip, bar, rod, or wire, and in molten form to make castings and other basic metal products. Primary manufacturing of ferrous and nonferrous metals begins with ore or concentrate as the primary input. Establishments manufacturing primary metals from ore and/or concentrate remain classified in the primary smelting, primary refining, or iron and steel mill industries regardless of the form of their output. Establishments primarily engaged in secondary smelting and/or secondary refining recover ferrous and nonferrous metals from scrap and/or dross. The output of the secondary smelting and/or secondary refining industries is limited to shapes such as ingot or billet that will be further processed. Recovery of metals from scrap often occurs in establishments that are primarily engaged in activities, such as rolling, drawing, extruding, or similar processes. Excluded from the Primary Metal Manufacturing subsector are establishments primarily engaged in manufacturing ferrous and nonferrous forgings (except ferrous forgings made in steel mills) and stampings. Although forging, stamping, and casting are all methods used to make metal shapes, forging and stamping do not use molten metals and are included in Subsector 332, Fabricated Metal Product Manufacturing. Establishments primarily engaged in operating coke ovens are classified in Industry 32419, Other Petroleum and Coal Products Manufacturing. Information related to NAICS descriptions and definitions used within this Feature Class is derived from the United States Census Bureau official U.S. Government Website
D and B geospatial data supports heightened awareness for emergency preparedness and economic recovery. D and B's critical infrastructure information provides important decision support information before, during and after crises by helping assess potential risk and impact as well as prepare for and track economic recovery in times of crisis. When used with GIS Visualization software, D and B data supports display of geospatial and GIS business information for impacted areas in times of crisis. For supplemental information on D and B solutions, including data cleansing, data quality, geospatial intelligence, emergency preparedness, homeland security, and law enforcement, and other government related uses visit
Time Period of Content
West Bounding Longitude:
East Bounding Longitude:
North Bounding Latitude:
South Bounding Latitude:
Distribution of this data is permitted only in accordance with the terms of NGA's D and B licensing agreement.
Access to this data is allowed in accordance with the license terms detailed in the contract between Harris Corporation, D and B and the National Geospatial-Intelligence Agency.
This data can only be used in accordance with the license terms detailed in the contract between Harris Corporation, D and B and the National Geospatial-Intelligence Agency.
Locations and Geodetic Networks, Business and Economic, Facilities and Structures
Dun and Bradstreet (D and B)
Mailing and Physical
Metadata Reference Information
Metadata Date Stamp:
Metadata Standard Name:
FGDC Content Standards for Digital Geospatial Metadata
Metadata Standard Version: