212321  Construction Sand and Gravel Mining

This U.S. industry comprises establishments primarily engaged in one or
more of the following: (1) operating commercial grade (i.e.,
construction) sand and gravel pits; (2) dredging for commercial grade
sand and gravel; and (3) washing, screening, or otherwise preparing
commercial grade sand and gravel.

The data published with NAICS code 212321 include the following
SIC industry:

1442 Construction sand and gravel