North American Industry Classification System (NAICS) code 333131 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 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.
- Official title
- Mining Machinery and Equipment Manufacturing
- Code level
- 6
- Parent industry
- Mining and Oil and Gas Field Machinery Manufacturing 33313
- Open opportunities
- 1 open · 3 active
SBA small-business size standard
900 employees
Employee-count basis · Special exception text applies
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.
Manufacturing coal and ore conveyors--are classified in U.S. Industry 333922, Conveyor and Conveying Equipment Manufacturing; and
Manufacturing surface mining machinery and equipment--are classified in Industry 333120, Construction Machinery Manufacturing;
Manufacturing underground mining locomotives--are classified in Industry 336510, Railroad Rolling Stock Manufacturing.
Manufacturing well drilling machinery--are classified in U.S. Industry 333132, Oil and Gas Field Machinery and Equipment Manufacturing;
Source and edition
2022 NAICS Manual definition and reference material from the U.S. Census Bureau.