| 2007 NAICS | 2012 NAICS | 2017 NAICS | Corresponding Index Entries | |||
| 212321 | 212321 | 212321 | Common sand quarrying and/or beneficiating | |||
| 212321 | 212321 | 212321 | Construction sand and gravel beneficiating (e.g., grinding, screening, washing) | |||
| 212321 | 212321 | 212321 | Construction sand or gravel dredging | |||
| 212321 | 212321 | 212321 | Gravel quarrying and/or beneficiating | |||
| 212321 | 212321 | 212321 | Pebbles (except grinding) mining and/or beneficiating | |||
| 212321 | 212321 | 212321 | Sand and gravel quarrying (i.e., construction grade) and/or beneficiating | |||
| 212321 | 212321 | 212321 | Sand, construction grade, quarrying and/or beneficiating |