NAICS 333131 - Mining Machinery and Equipment Manufacturing
This page includes content generated by AI. It is intended for general guidance only and should be verified for your specific situation.
What is NAICS 333131
NAICS code 333131 covers establishments primarily engaged in manufacturing underground mining machinery and equipment, including coal breakers, mining cars, core drills, coal cutters, and rock drills. Additionally, it includes the production of mineral beneficiating machinery and equipment used in both surface and underground mining operations. Businesses in this sector often specialize in designing and fabricating heavy-duty, durable machinery tailored to the demanding environments of mining activities. These companies are essential to the mining supply chain, providing critical equipment that enhances extraction efficiency and safety. Government agencies contract with these manufacturers to support public mining operations, research, and infrastructure projects that require specialized mining machinery. The sector also plays a pivotal role in advancing technological innovations for mineral processing and resource extraction.
Industry Classification for NAICS 333131
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.
Breakdown for NAICS 333131
- Manufactures machinery for underground mining operations including coal and mineral extraction.
- Produces equipment for mineral beneficiation used in both surface and underground mines.
- Includes the design and fabrication of heavy-duty mining vehicles and drilling equipment.
- Covers both standard equipment production and custom machinery manufacturing.
- Subject to industry size standards typically based on annual revenue thresholds.
- Supports government agencies involved in mining regulation, research, and infrastructure.
Included Activities for NAICS 333131
- Manufacturing coal breakers and mining cars.
- Producing core drills, coal cutters, and rock drills for underground mining.
- Fabricating mineral beneficiation machinery for processing raw ores.
- Designing custom mining equipment to meet specific operational requirements.
- Providing maintenance and repair services for mining machinery.
- Conducting research and development for innovative mining technologies.
- Supplying replacement parts and components for mining equipment.
- Testing and quality assurance of mining machinery before delivery.
Business Types for NAICS 333131
- Heavy machinery manufacturers specializing in mining equipment.
- Custom equipment fabricators for mineral processing.
- Industrial machinery repair and maintenance firms.
- Engineering and design companies focusing on mining technology.
- Small and medium-sized enterprises supplying specialized mining parts.
- Manufacturers participating in government contracting and subcontracting.
Subcategories for NAICS 333131
- Amalgamators (i.e., metallurgical and mining machinery) manufacturing
- Augers, mining-type, manufacturing
- Bits, rock drill, underground mining-type, manufacturing
- Breakers, coal, manufacturing
- Cars, mining, manufacturing
- Cleaning machinery, mining-type, manufacturing
- Coal breakers, cutters, and pulverizers manufacturing
- Concentration machinery, mining-type, manufacturing
- Core drills, underground mining-type, manufacturing
- Crushing machinery, stationary, manufacturing
- Cutters, coal, manufacturing
- Drilling equipment, underground mining-type, manufacturing
- Drills, core, underground mining-type, manufacturing
- Drills, rock, underground mining-type, manufacturing
- Dumpers, mining car, manufacturing
- Feeders, mineral beneficiating-type, manufacturing
- Flotation machinery, mining-type, manufacturing
- Hammer mill machinery (i.e., rock and ore crushing machines), stationary, manufacturing
- Loading machines, underground mining, manufacturing
- Mineral processing and beneficiating machinery manufacturing
- Mining cars manufacturing
- Ore crushing, washing, screening, and loading machinery manufacturing
- Pellet mills machinery, mining-type, manufacturing
- Quarrying machinery and equipment manufacturing
- Rock crushing machinery, stationary, manufacturing
- Rock drills, underground mining-type, manufacturing
- Scraper loaders, underground mining-type, manufacturing
- Screening machinery, stationary, manufacturing
- Sedimentary mineral machinery manufacturing
- Sieves and screening equipment, mineral beneficiating, manufacturing
- Stone beneficiating machinery manufacturing
- Underground mining machinery manufacturing
- Washers, aggregate and sand, stationary, manufacturing
Government Buyers for NAICS 333131
Government agencies such as the Department of the Interior (including the Bureau of Land Management and the Office of Surface Mining), the Department of Energy, and state mining departments are the primary buyers of mining machinery and equipment. These agencies require advanced mining equipment to support regulatory oversight, environmental remediation, mineral resource development, and emergency response in mining regions. Contracting for these products ensures that mining operations meet safety and environmental standards, and supports national interests in resource security and energy production. Additionally, federal agencies engaged in research or infrastructure development may procure specialized mining machinery to conduct geological surveys or develop new mineral extraction technologies.
Contract Types & Procurement for NAICS 333131
Common contract types in this sector include firm-fixed-price contracts for the procurement of standard mining equipment and cost-reimbursement contracts for research and development projects involving new mining technologies. Procurement methods often involve competitive bidding, including Requests for Proposals (RFPs) and Invitations for Bid (IFBs), with some contracts awarded through simplified acquisition procedures for smaller purchases. Typical contract values can range from tens of thousands for replacement parts to multi-million-dollar contracts for large-scale machinery systems or custom-built equipment. Long-term service agreements for maintenance and repairs are also prevalent, ensuring operational readiness and compliance with safety standards.
Details for NAICS 333131
Explore the hierarchy and related codes for this industry
Federal Contracting Intelligence
Find Mining Machinery and Equipment Manufacturing Contract Opportunities
Access federal solicitations, track award history, and monitor agency spend in this industry in one place. Designed to support small businesses pursuing federal revenue.
- Opportunities updated regularly from SAM.gov
- Filter by set-aside, agency, NAICS, and PSC
- Get notified when matching opportunities are posted
Schedule a Call
30 minutes • Discuss your goals with our team
Guidance
Leverage Your Certifications for a Competitive Edge
Our federal contracting specialists can help businesses build certifications and capability statements to pursue opportunities in industries like Mining Machinery and Equipment Manufacturing .
- WOSB, VOSB & 8(a) certification support
- Capability statement writing & review
- SAM.gov registration & compliance guidance
Construction
Technology
Logistics
Healthcare
+ Many More Industries
Discover Your Next Industry Opportunity
Browse thousands of NAICS codes across every federal procurement sector. Find industries aligned with your capabilities and uncover where government spending is concentrated.
Search the NAICS Directory
1,000+ industry codes • Free to browse