NAICS UNIVERSITY · Free research for insurance agents
Crushed and Broken Limestone Mining and Quarrying
NAICS 212312 · United States · 2022 edition
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).
Start the review with workers compensation.
For Crushed and Broken Limestone Mining and Quarrying, the saved research highlights workers compensation, blasting / vibration liability, heavy mobile equipment. Confirm how these arise in the actual operation, what controls are used and whether additional services change the proposed coverage.
Questions to ask
- Is blasting performed on-site, and if so, is it done by in-house personnel or subcontracted to a licensed blasting company?
- What are the nearest neighboring structures or populated areas to the active quarry face?
- What types and values of mobile equipment are owned and operated on-site?
- Are there any active environmental compliance issues, stormwater permits, or regulatory notices?
- What is the current workers comp experience modification factor and loss history over the past five years?
- Is lime production or calcining performed at this facility, or is output limited to crushed aggregate and pulverized stone?
- For Crushed and Broken Limestone Mining and Quarrying, what should the underwriter know about active on-site blasting operations, particularly near residential or commercial development?
- For Crushed and Broken Limestone Mining and Quarrying, what should the underwriter know about prior blasting-related property damage or vibration claims from neighboring properties?
Activities described by this code
Other activities to examine
- Producing lime: 327410 — Lime Manufacturing;
- Mining or quarrying bituminous limestone: 212319 — Other Crushed and Broken Stone Mining and Quarrying
Census classification reference
For educational purposes only. AI-generated insurance research and automated logic can contain errors. Independently verify classification and coverage decisions.
Compare another operationInsurance operations research — draft
Limestone quarrying involves site development, drilling, blasting or mechanical excavation, and crushing and sizing of limestone and related carbonate rocks such as dolomite and marl. Finished aggregate, crushed stone, or pulverized limestone is typically sold to construction, agriculture, or industrial customers. Operations generally involve heavy mobile equipment — blast drills, loaders, haul trucks, crushers, and conveyors — along with on-site processing and stockpiling.
Questions to investigate
- Is blasting performed on-site, and if so, is it done by in-house personnel or subcontracted to a licensed blasting company?
- What are the nearest neighboring structures or populated areas to the active quarry face?
- What types and values of mobile equipment are owned and operated on-site?
- Are there any active environmental compliance issues, stormwater permits, or regulatory notices?
This insurance research was generated in April 2026. It has not received a complete human review. The October 12, 2026 audit checked codes and titles only, not descriptions or coverage assertions.