NAICS UNIVERSITY · Free research for insurance agents
Mining Machinery and Equipment Manufacturing
NAICS 333131 · United States · 2022 edition
This U.S. industry comprises establishments primarily engaged in (1) manufacturing underground mining machinery and equipment, such as coal breakers, mining cars, core drills, coal cutters, and rock drills, and (2) manufacturing mineral beneficiating machinery and equipment used in surface or underground mines.
Start the review with products liability.
For Mining Machinery and Equipment Manufacturing, the saved research highlights products liability, employee injuries, commercial property. Confirm how these arise in the actual operation, what controls are used and whether additional services change the proposed coverage.
Questions to ask
- What specific types of mining machinery are manufactured — underground, surface, or both?
- Are products sold domestically only, or exported to international mining operations?
- What quality-control and testing protocols are in place before equipment ships?
- Has the operation had any products liability or completed-operations claims in the past five years?
- Is any equipment leased or placed on consignment rather than sold outright?
- For Mining Machinery and Equipment Manufacturing, what should the underwriter know about prior products liability losses linked to equipment failures at mine sites?
- For Mining Machinery and Equipment Manufacturing, what should the underwriter know about manufacture of equipment used in coal or hard-rock underground mining where catastrophic injury potential is elevated?
- For Mining Machinery and Equipment Manufacturing, what should the underwriter know about significant export sales to jurisdictions with difficult claims environments?
Activities described by this code
Other activities to examine
- Manufacturing surface mining machinery and equipment: 333120 — Construction Machinery Manufacturing
- Manufacturing well drilling machinery: 333132 — Oil and Gas Field Machinery and Equipment Manufacturing
- Manufacturing coal and ore conveyors: 333922 — Conveyor and Conveying Equipment Manufacturing;
- Manufacturing underground mining locomotives: 336510 — Railroad Rolling Stock Manufacturing
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
Establishments in this class design, fabricate, and assemble heavy machinery used in underground mining and mineral processing — including coal cutters, rock drills, core drills, mining cars, and beneficiating equipment. Operations typically involve metal fabrication, machining, welding, and assembly of large components, with finished equipment sold or leased to mining companies.
Questions to investigate
- What specific types of mining machinery are manufactured — underground, surface, or both?
- Are products sold domestically only, or exported to international mining operations?
- What quality-control and testing protocols are in place before equipment ships?
- Has the operation had any products liability or completed-operations claims in the past five years?
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.