North American Industry Classification System (NAICS) code 21311 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 industry comprises establishments primarily engaged in providing support services, on a contract or fee basis (except geophysical surveying and mapping, mine site preparation, construction, and transportation activities), required for the mining and quarrying of minerals and for the extraction of oil and gas. Drilling, taking core samples, and making geological observations at prospective sites for minerals, on a contract or fee basis, are included in this industry.
- Official title
- Support Activities for Mining
- Code level
- 5
- Parent industry
- Support Activities for Mining 2131
- Open opportunities
- 0 open · 0 active
Excluded or separately classified activities
Official Census cross-references identify activities that belong under another North American Industry Classification System (NAICS) code.
Inspecting pipelines (i.e., visual)--are classified in Industry 54199, All Other Professional, Scientific, and Technical Services;
Mining machinery and equipment repair and maintenance--are classified in Industry 81131, Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance;
Mining, quarrying, and/or beneficiating on a contract or fee basis--are classified in Subsector 212, Mining (except Oil and Gas), based on the mineral mined;
Oil and gas pipeline and related structures construction and repair--are classified in Industry 23712, Oil and Gas Pipeline and Related Structures Construction;
Operating oil and gas field properties on a contract or fee basis--are classified in Subsector 211, Oil and Gas Extraction, based on the primary activity;
Performing geophysical surveying and mapping services for minerals (i.e., coal, metal ores, oil and gas, and nonmetallic minerals) on a contract or fee basis--are classified in Industry 54136, Geophysical Surveying and Mapping Services;
Providing landman services on a contract or fee basis--are classified in Industry 53139, Other Activities Related to Real Estate.
Providing transportation activities on a contract or fee basis--are classified in Sector 48-49, Transportation and Warehousing, based on the primary activity; and
Site preparation and related construction activities on a contract or fee basis--are classified in Industry 23891, Site Preparation Contractors;
Source and edition
2022 NAICS Manual definition and reference material from the U.S. Census Bureau.