CONSTRUCTION MATERIALS COMPANY TRADING IND. & CONTRACTING

Stone Mining and Quarrying

NAICS #21231 | This industry comprises (1) establishments primarily engaged in developing the mine site, mining or quarrying dimension stone (i.e., rough blocks and/or slabs of stone), or mining and quarrying crushed and broken stone and/or (2) preparation plants primarily engaged in beneficiating stone (e.g., crushing, grinding, washing, screening, pulverizing, and sizing). Producing lime--are classified in Industry 327410, Lime Manufacturing; and Quarrying and dressing dimension stone--are classified Industry 32799, All Other Nonmetallic Mineral Product Manufacturing.

Highway, Street, and Bridge Construction

NAICS #2373 |

Electrical Contractors

NAICS #23821 | This industry comprises establishments primarily engaged in installing and servicing electrical wiring and equipment. Electrical contractors included in this industry may include both the parts and labor when performing work. Electrical contractors may perform new work, additions, alterations, maintenance, and repairs. Installing and maintaining telecommunications lines by telecommunications companies--are classified in Subsector 517, Telecommunications; Constructing power and communication transmission lines--are classified in Industry 237130, Power and Communication Line and Related Structures Construction; and Burglar and fire alarm installation combined with sales, maintenance, or monitoring services--are classified in U.S. Industry 561621, Security Systems Services (except Locksmiths).

Concrete Pipe, Brick, and Block Manufacturing

NAICS #32733 | This industry comprises establishments primarily engaged in manufacturing concrete pipe, brick, and block. Establishments primarily engaged in manufacturing concrete products (except brick, block, and pipe) are classified in Industry 327390, Other Concrete Product Manufacturing.

All Other Nonmetallic Mineral Product Manufacturing

NAICS #32799 | This industry comprises establishments primarily engaged in manufacturing nonmetallic mineral products (except pottery, ceramics, and plumbing fixtures; clay building materials and refractories; glass and glass products; cement; ready-mix concrete; concrete products; lime; gypsum products; and abrasive products). Manufacturing pottery, ceramics, and plumbing fixtures--are classified in Industry 32711, Pottery, Ceramics, and Plumbing Fixture Manufacturing; Mining or quarrying stone, earth, or other nonmetallic minerals--are classified in Industry Group 2123, Nonmetallic Mineral Mining and Quarrying; Buying and selling semifinished monuments and tombstones with no work other than polishing, lettering, or shaping to custom order--are classified in Sector 42, Wholesale Trade or Sector 44-45, Retail Trade; Manufacturing clay building materials and refractories--are classified in Industry 32712, Clay Building Material and Refractories Manufacturing; Manufacturing glass and glass products--are classified in Industry 32721, Glass and Glass Product Manufacturing; Manufacturing cement--are classified in Industry 327310, Cement Manufacturing; Mixing and delivering ready-mix concrete--are classified in Industry 327320, Ready-Mix Concrete Manufacturing; Manufacturing concrete pipe, brick, and block--are classified in Industry 32733, Concrete Pipe, Brick, and Block Manufacturing; Manufacturing concrete products (except pipe, brick, and block)--are classified in Industry 327390, Other Concrete Product Manufacturing; Manufacturing lime--are classified in Industry 327410, Lime Manufacturing; Manufacturing gypsum products--are classified in Industry 327420, Gypsum Product Manufacturing; Manufacturing abrasive products--are classified in Industry 327910, Abrasive Product Manufacturing; and Manufacturing metallic scouring pads and steel wool--are classified in Industry 33299, All Other Fabricated Metal Product Manufacturing.