North American Industry Classification System (NAICS) code 212312 is used by federal buyers for market research, set-aside size standards, and reporting. Official titles come from the Census Bureau NAICS structure.
Official definition
This U.S. industry comprises (1) establishments primarily engaged in developing the mine site, mining or quarrying crushed and broken limestone (including related rocks, such as dolomite, cement rock, marl, travertine, and calcareous tufa) and (2) preparation plants primarily engaged in beneficiating limestone (e.g., grinding or pulverizing).
- Official title
- Crushed and Broken Limestone Mining and Quarrying
- Code level
- 6
- Parent industry
- Stone Mining and Quarrying 21231
- Open opportunities
- 5 open · 10 active
SBA small-business size standard
750 employees
Employee-count basis
Check this standard and its exceptionsExcluded or separately classified activities
Official Census cross-references identify activities that belong under another North American Industry Classification System (NAICS) code.
Mining or quarrying bituminous limestone--are classified in U.S. Industry 212319, Other Crushed and Broken Stone Mining and Quarrying.
Producing lime--are classified in Industry 327410, Lime Manufacturing; and
Source and edition
2022 NAICS Manual definition and reference material from the U.S. Census Bureau.