Sand, Gravel, Clay, and Ceramic and Refractory Minerals Mining and Quarrying

Official definition

This industry comprises (1) establishments primarily engaged in developing the mine site and/or mining, quarrying, dredging for sand and gravel, or mining clay (e.g., china clay, paper clay and slip clay) or ceramic and refractory minerals and (2) preparation plants primarily engaged in beneficiating (e.g., washing, screening, and grinding) sand and gravel, clay, and ceramic and refractory minerals.

Excluded or separately classified activities

Official Census cross-references identify activities that belong under another North American Industry Classification System (NAICS) code.

• Calcining, dead burning, or otherwise processing (i.e., beyond basic preparation) clay or ceramic and refractory minerals--are classified in Industry 32799, All Other Nonmetallic Mineral Product Manufacturing;

  All Other Nonmetallic Mineral Product Manufacturing32799

• Construction projects involving water resources (e.g., dredging and land drainage)--are classified in Industry 23799, Other Heavy and Civil Engineering Construction.

  Other Heavy and Civil Engineering Construction23799

• Manufacturing ready-mix concrete--are classified in Industry 32732, Ready-Mix Concrete Manufacturing;

  Ready-Mix Concrete Manufacturing32732

• Oil shale mining and/or beneficiating--are classified in Industry 21112, Crude Petroleum Extraction; and

  Crude Petroleum Extraction21112

• Shaping, molding, baking, burning, or hardening nonclay ceramics, clay and nonclay refractories, and structural clay products--are classified in Industry 32712, Clay Building Material and Refractories Manufacturing;

  Clay Building Material and Refractories Manufacturing32712

• Shaping, molding, glazing, and firing pottery, ceramics, and plumbing fixtures--are classified in Industry 32711, Pottery, Ceramics, and Plumbing Fixture Manufacturing;

  Pottery, Ceramics, and Plumbing Fixture Manufacturing32711