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. Establishments primarily engaged in--

Including:

• Common sand quarrying and/or beneficiating
• Construction sand and gravel beneficiating (e.g., grinding, screening, washing)
• Construction sand or gravel dredging
• Gravel quarrying and/or beneficiating
• Pebbles (except grinding) mining and/or beneficiating
• Sand and gravel quarrying (i.e., construction grade) and/or beneficiating
• Sand, construction grade, quarrying and/or beneficiating