Question: What are the new North American Industrial Classification System (NAICS) codes for aggregates and concrete construction businesses?
Answer: The U.S. Bureau of the Census recently published a new coding system for business activity that replaces the 1987 four-digit SIC code system. (See table). Under the old system, aggregate businesses were coded with 1422. The NAICS code splits aggregate producers into two classifications: 212312 for producers of crushed and broken limestone, mining and quarrying; and 212321 for producers of sand and gravel. Highway and street construction contractors (except for elevated highways) formerly classified by the SIC code of 1611 are now classified under the NAICS code of 234111.
1987 SIC CodesNAICS Code
1741 Masonry, stone setting and other stone work23541 Masonry and stone contractors
1771 Concrete work23542 Drywall, plastering, acoustical and insulation contractors (includes stucco)
23571 Concrete contractors
3271 Concrete block and brick327331 Concrete block and brick manufacturing
3272 Concrete products, except brick and block327332 Concrete pipe manufacturing
32739 Other concrete product manufacturing
327999 All other miscellaneous nonmetallic mineral product manufacturing
3273 Ready-mixed concrete32732 Ready-mixed concrete manufacturing