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    1. Home
    2. /Gov Explore
    3. /NAICS Codes
    4. /21311

    NAICS Demand Lane

    Support Activities for Mining, Contract Opportunities

    475 total opportunities (475 active) tied to NAICS 21311 across federal, state, local, and forecast sources.
    NAICS 21311Federal + SLED475 total
    View NAICS definition →
    Total Opportunities
    475
    Across all indexed sources
    Active Estimate
    475
    Approximate active count
    Source Count
    3
    Federal, SLED, and forecast lanes

    Latest federal solicitations for NAICS 21311.

    DEPARTMENT OF THE INTERIOR

    GLBA UST CORRECTIVE ACTION

    Active

    AI Summary

    The Department of the Interior, National Park Service is soliciting proposals for GLBA UST corrective action services. This opportunity is categorized under NAICS code 213112 and is not set aside for simplified acquisition procedures. Interested bidders should prepare to address environmental consulting and corrective …

    AK

    Posted Sep 13, 2026Due Sep 21, 2026SolicitationNAICS 213112Total Small Business Set-Aside (FAR 19.5)Sol: 140P9726Q0071
    View details→

    DEPARTMENT OF THE INTERIOR

    F--SYNOPSIS: OIL WELL PLUGGING AT BISO

    Archived

    AI Summary

    The National Park Service is preparing to issue an Invitation for Bid for oil well plugging at Big South Fork National River and Recreation Area. The project involves plugging and reclaiming 16 wells and re-plugging one well, with a contract value between $5 million and $10 million. A site visit will be announced, and …

    DC

    Posted Sep 2, 2026PresolicitationNAICS 213112Sol: DOIPFBO260026
    View details→

    DEPARTMENT OF THE INTERIOR

    F--SOURCES SOUGHT: OIL WELL PLUGGING AT BISO

    Archived

    AI Summary

    The National Park Service is conducting a Sources Sought for interested parties to provide oil well plugging services for 17 wells at BISO. This is not a solicitation but a request for information. Interested vendors should respond by September 9, 2026, to the provided email.

    DC

    Posted Sep 2, 2026Due Sep 9, 2026Sources SoughtNAICS 213112Sol: DOIPFBO260024
    View details→

    DEPARTMENT OF VETERANS AFFAIRS

    H266--BOILER PLANT GAS DETECTION TESTING

    Archived

    AI Summary

    The Department of Veterans Affairs is soliciting proposals for boiler plant gas detection testing services. This opportunity is classified under NAICS code 213112 and is not set aside for small businesses. Interested bidders should prepare to submit their proposals by the specified deadline.

    MS

    Posted Aug 28, 2026Due Aug 28, 2026SolicitationNAICS 213112Sol: 36C25626Q1147
    View details→

    DEPARTMENT OF THE INTERIOR

    HEAVY MINERAL SEPARATION SERVICES

    Active

    AI Summary

    The U.S. Geological Survey requires heavy mineral separation services under solicitation 140G0226Q0162. This opportunity is a small business set-aside and will be awarded based on the most advantageous quote. The acquisition follows FAR Part 12 and 13.5 procedures, emphasizing commercial item procurement.

    CO

    Posted Aug 28, 2026Due Sep 18, 2026SolicitationNAICS 213115Total Small Business Set-Aside (FAR 19.5)Sol: 140G0226Q0162
    View details→

    DEPARTMENT OF THE INTERIOR

    Z--BUFFALO MONITOR WELL PLUGGING 2026

    Archived

    AI Summary

    The Department of the Interior, Bureau of Land Management is seeking proposals for the Monitoring Well Plugging Phase III at Ford Ranch. This opportunity is classified under NAICS code 213112 and is a service-focused solicitation. Interested bidders should prepare to address environmental management and compliance requ…

    CO

    Posted Aug 26, 2026Due Sep 2, 2026Combined Synopsis/SolicitationNAICS 213112Total Small Business Set-Aside (FAR 19.5)Sol: 140L0626Q0017
    View details→

    DEPARTMENT OF THE INTERIOR

    F--JELA WELL PLUGGING - 2026

    Archived

    AI Summary

    The Department of the Interior, National Park Service, is seeking proposals for well plugging services at JELA. This opportunity is categorized under NAICS code 213112 and is a combined synopsis/solicitation. Interested bidders should prepare to address the specific requirements outlined in the solicitation.

    DC

    Posted Aug 17, 2026Due Sep 3, 2026Combined Synopsis/SolicitationNAICS 213112Sol: 140PS126B0009
    View details→

    DEPT OF DEFENSE

    31--BEARING,SLEEVE

    Archived

    AI Summary

    The Department of Defense is seeking quotes for 48 units of NSN 3120013681691, BEARING, SLEEVE. This opportunity is a combined synopsis/solicitation and is available electronically. All responsible sources may submit a quote, which will be considered if timely received.

    VA

    Posted Aug 16, 2026Due Aug 24, 2026Combined Synopsis/SolicitationNAICS 213113Sol: SPE4A626T18FR
    View details→

    DEPT OF DEFENSE

    31--BUSHING,SLEEVE

    Archived

    AI Summary

    The Department of Defense is seeking quotes for the procurement of 13 units of bushing, sleeve (NSN 3120011147043) with delivery to DLA Distribution Depot Oklahoma. Quotes must be submitted electronically and will be considered if received in a timely manner. The procurement falls under FAR Part 13 - Simplified Acquisi…

    VA

    Posted Aug 16, 2026Due Aug 24, 2026Combined Synopsis/SolicitationNAICS 213113Total Small Business Set-Aside (FAR 19.5)Sol: SPE4A626T17YD
    View details→

    DEPT OF DEFENSE

    PREVENTIVE MAINTENANCE PROGRAM AND SERVICE ORDERS FOR ABOVEGROUND STORAGE TANKS (AST), YOKOSUKA, JAPAN

    Archived

    AI Summary

    The Naval Facilities Engineering Command, Far East seeks a contractor for a Firm Fixed Price contract to provide preventive maintenance and service orders for aboveground storage tanks at Commander Fleet Activities Yokosuka, Japan. The contract will include a base period and four one-year options.

    AP

    Posted Aug 11, 2026Due Aug 25, 2026Sources SoughtNAICS 213112Sol: N4008426B0408
    View details→

    Source mix

    How this NAICS code is represented across indexed contract sources.

    federal
    197
    sled
    270
    forecast
    8

    Related NAICS Codes

    • 21, Mining, Quarrying, and Oil and Gas Extraction→
    • 211, Oil and Gas Extraction→
    • 2111, Oil and Gas Extraction→
    • 21112, Crude Petroleum Extraction →
    • 211120, Crude Petroleum Extraction →
    • 21113, Natural Gas Extraction →
    • 211130, Natural Gas Extraction →
    • 212, Mining (except Oil and Gas)→
    • 2121, Coal Mining→
    • 21211, Coal Mining→

    Explore

    • 21311 Definition→
    • Browse NAICS Codes→
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    About NAICS 21311

    Support Activities for Mining include establishments that perform exploration, drilling, and other support services for mining operations. These activities facilitate the extraction of minerals and other geological materials from the earth.

    Read the full NAICS definition →