NAICS Code 327 — Nonmetallic Mineral Product Manufacturing

Subsector in the official 2022 North American Industry Classification System (U.S. Census Bureau). It contains 5 direct sub-codes.

Code	327
Title	Nonmetallic Mineral Product Manufacturing
Level	Subsector (3-digit)
Edition	NAICS 2022 edition

Official definition (2022 NAICS)

The Nonmetallic Mineral Product Manufacturing subsector is based on the transformation of mined or quarried nonmetallic minerals, such as sand, gravel, stone, clay, and refractory materials, into products for intermediate or final consumption. Processes used include grinding, mixing, cutting, shaping, and honing. Heat often is used in the process and chemicals are frequently mixed to change the composition, purity, and chemical properties for the intended product. For example, glass is produced by heating silica sand to the melting point (sometimes combined with cullet or recycled glass) and then drawn, floated, or blow molded to the desired shape or thickness. Refractory materials are heated and then formed into bricks or other shapes for use in industrial applications.

The Nonmetallic Mineral Product Manufacturing subsector includes establishments that manufacture bricks, refractories, ceramic products, and glass and glass products, such as plate glass and containers. Also included are cement and concrete products, lime, gypsum, and other nonmetallic mineral products including abrasive products, ceramic plumbing fixtures, statuary, cut stone products, and mineral wool. The products are used in a wide range of activities from construction and heavy and light manufacturing to articles for personal use.

Mining, beneficiating, and manufacturing activities often occur in a single location. Separate receipts will be collected for these activities whenever possible. When receipts cannot be broken out between mining and manufacturing, establishments that mine or quarry nonmetallic minerals, beneficiate the nonmetallic minerals, and further process the nonmetallic minerals into a more finished manufactured product are classified based on the primary activity of the establishment. A mine that manufactures a small amount of finished products is classified in Sector 21, Mining, Quarrying, and Oil and Gas Extraction. An establishment that mines whose primary output is a more finished manufactured product is classified in the Manufacturing sector.

Excluded from the Nonmetallic Mineral Product Manufacturing subsector are establishments that primarily beneficiate mined nonmetallic minerals. Beneficiation is the process whereby the extracted material is reduced to particles that can be separated into mineral and waste, the former suitable for further processing or direct use. Beneficiation establishments are included in Sector 21, Mining, Quarrying, and Oil and Gas Extraction.

Where 327 sits in the hierarchy

Level	Code	Title
Sector	31-33	Manufacturing
Subsector	327	Nonmetallic Mineral Product Manufacturing

Codes under 327

Code	Title
3271	Clay Product and Refractory Manufacturing
3272	Glass and Glass Product Manufacturing
3273	Cement and Concrete Product Manufacturing
3274	Lime and Gypsum Product Manufacturing
3279	Other Nonmetallic Mineral Product Manufacturing

Related Subsector codes

• 311 — Food Manufacturing
• 312 — Beverage and Tobacco Product Manufacturing
• 313 — Textile Mills
• 314 — Textile Product Mills
• 315 — Apparel Manufacturing
• 316 — Leather and Allied Product Manufacturing
• 321 — Wood Product Manufacturing
• 322 — Paper Manufacturing
• 323 — Printing and Related Support Activities
• 324 — Petroleum and Coal Products Manufacturing
• 325 — Chemical Manufacturing
• 326 — Plastics and Rubber Products Manufacturing

Data: official 2022 NAICS structure, descriptions and Census concordances, U.S. Census Bureau — U.S. government works in the public domain (17 U.S.C. §105). Suggested reference, not an official determination.