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NAICS Code· 212323

NAICS 212323: Kaolin, Clay, and Ceramic and Refractory Minerals Mining

This U.S. industry comprises (1) establishments primarily engaged in developing the mine site and/or mining clay (e.g., china clay, paper clay and slip clay) or ceramic and refractory minerals and (2) establishments primarily engaged in beneficiating (i.e., preparing) clay or ceramic and refractory minerals. Illustrative Examples: Bentonite mining and/or beneficiating Fuller's earth mining and/or beneficiating Common clay mining and/or beneficiating Kaolin mining and/or beneficiating Feldspar mining and/or beneficiating Ball clay mining and/or beneficiating Fire clay mining and/or beneficiating Shale (except oil shale) mining and/or beneficiating Cross-References. Establishments primarily engaged in--Show more

NAICS 212323 – Kaolin, Clay, and Ceramic and Refractory Minerals Mining encompasses the extraction and initial processing of non-metallic minerals critical to advanced industrial and defense applications. This sector includes the mining of kaolin, ball clay, fire clay, stoneware clay, and other ceramic and refractory-grade minerals used in high-temperature ceramics, insulation materials, crucibles, furnace linings, and advanced ceramic components.

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NAICS 212323 FAQ

Frequently Asked Questions

NAICS code 212323 covers Kaolin, Clay, and Ceramic and Refractory Minerals Mining. This U.S. industry comprises (1) establishments primarily engaged in developing the mine site and/or mining clay (e.g., china clay, paper clay and slip clay) or ceramic and refractory minerals and (2) establishments primarily engaged in beneficiating (i.e., preparing) clay or ceramic and refractory minerals. Illustrative Examples: Bentonite mining and/or beneficiating Fuller's earth mining and/or beneficiating Common clay mining and/or beneficiating Kaolin mining and/or beneficiating Feldspar mining and/or beneficiating Ball clay mining and/or beneficiating Fire clay mining and/or beneficiating Shale (except oil shale) mining and/or beneficiating Cross-References. Establishments primarily engaged in--

Recently Posted in Kaolin, Clay, and Ceramic and Refractory Minerals Mining

NAICS: 212323
Closed
International
Low-Permeability Clay Capping Material SupplierThis subcontract involves the supply of 20,000 tonnes of certified raw clay and silty clay material for prime contractors working on County of Simcoe landfill projects. The supplier must provide material that adheres to Clay Cap Gradation Report specifications and is backed by a Ministry of Natural Resources and Forestry Certificate of Approval. To ensure quality and compliance, the supplier is required to provide detailed laboratory analysis covering water content, hydraulic conductivity, grain size distribution, Atterberg Limits, and Standard Proctor tests. The response deadline for this opportunity is October 6, 2026.
County of Simcoe

POSTED

28 days ago

CLOSED

7 days ago
View Details
NAICS: 212323
Closed
International
CLAY CAPPING MATERIAL REQUIRED FOR SIMCOE COUNTY LANDFILLS
Solicitation # RFT 2026-107
The County of Simcoe is soliciting tenders for the supply, loading, transportation, and delivery of approximately 20,000 tonnes of clay and silty clay capping material for use in low-permeability landfill cover systems. The material will be delivered to the Collingwood Landfill Site, with an estimated requirement of 5,000 tonnes, and the Oro Landfill Site, with an estimated requirement of 17,000 tonnes. The contract is scheduled to commence on or before October 19, 2026, and must be completed by November 30, 2026. The County intends to award the contract on a site-by-site basis to the bidder offering the lowest compliant total cost for each location. Qualified contractors must provide all necessary labor, equipment, and supervision to ensure material is free of contamination and meets strict technical and environmental specifications, including specific grain size distribution and gradation limits. All material must originate from a licensed source with a Certificate of Approval from the Ministry of Natural Resources and Forestry and must pass a visual inspection by the County and WSP prior to award. Bidders are required to provide at least three references from similar projects completed within the last five years. Award is contingent upon providing a WSIB Clearance Certificate and proof of insurance, including five million dollars in general liability and two million dollars in automobile liability coverage. Payments will be made via electronic funds transfer on a net 28-day basis upon receipt of proper invoices and certified scale tickets.
County of Simcoe

POSTED

28 days ago

CLOSED

7 days ago
View Details
NAICS: 212323
Awarded
DIBBS
BENTONITE
Solicitation # SPE8E5-26-T-2076
The Defense Logistics Agency awarded contract SPE8E626P1280 to A.M.S. NETWORK, LLC on September 2, 2026, for the procurement of Technical Bentonite under solicitation SPE8E5-26-T-2076. This federal award, categorized under NAICS code 212323, consists of a firm fixed price total of $2,780.00 for the delivery of 100 bags of the material, identified by NSN 9390-01-409-2011 and PR 7016075162. The order was issued by DLA Troop Support and requires the supplies to be delivered to the Naval Construction Training Center located in China Lake, California. The specified delivery deadline for the shipment is November 12, 2026.
Defense Logistics Agency

POSTED

about 1 month ago

DEADLINE

N/A
View Details
NAICS: 212323
Closed
Federal
Request for Information Commercial Clay Source for New Orleans to Venice (NOV), Louisiana (LA) Projects Hurricane and Storm Damage Risk Reduction System
Solicitation # W912EQ26N3401
The U.S. Army Corps of Engineers is conducting market research through a Request for Information (RFI) to identify commercially available clay material sources to support the New Orleans to Venice (NOV), Louisiana Hurricane and Storm Damage Risk Reduction System (HSDRRS). The project requires approximately 5,000,000 cubic yards of clay, with construction contracts anticipated to be awarded between the fourth quarter of Fiscal Year 2027 and the fourth quarter of Fiscal Year 2030. The overall project is scheduled for completion by the end of 2035. This RFI is for information and planning purposes only and does not constitute a formal solicitation or a guarantee of contract award. Interested firms must submit a comprehensive package that includes their business size, socioeconomic status, and a Statement of Capability. Submissions must strictly adhere to the 14 mandatory requirements outlined in Appendix A, which cover regulatory, environmental, and technical specifications. Key requirements include providing a signed Right of Entry, topographic and site layout maps, wetland determinations, coastal zone management permits, and cultural resource reports. Additionally, potential sources must provide geotechnical reports stamped by a licensed professional engineer, confirming that the clay meets specific soil classification standards (CL or CH) and adheres to strict limits regarding organic content, sand content, and salinity. All technical documentation and environmental assessments must be current, typically updated within the last 6 to 12 months. Responses must be submitted via the DoD SAFE portal to the designated point of contact no later than 11:00 A.M. on August 31, 2026.
Department Of Defense

POSTED

about 2 months ago

CLOSED

about 1 month ago
View Details
NAICS: 212323
Closed
SLED
RFB-758-2700000023-2 | Golf Course Sand
Solicitation # RFB 758 2700000023
The Kentucky Department of Parks is seeking bids for the supply of specialized golf course sand under solicitation RFB-758-2700000023-2, with proposals due by July 29, 2026. The contract requires delivery of multiple quantities of kiln-dried sand types, including Short Mountain 70/30 and Arms Select Topdressing Sand, totaling approximately 590 tons across ten line items. All sand must meet stringent technical specifications, such as a particle size distribution of 4–6% retained on the #18 sieve, a minimum permeability rate of 37 inches per hour, and a penetrometer reading exceeding 2.0 kg/cm², with independent laboratory reports submitted to verify compliance. Bidders may propose equal or equivalent products under Section 8, provided they demonstrate equivalence through descriptive literature and meet or exceed all essential criteria. Deliveries must be completed within 14 days of order receipt under F.O.B. Destination, Freight Prepaid terms, with failure to meet this deadline incurring a 1% daily deduction from the invoice. Evaluation for award will be conducted using a trade-off approach where price is the sole numerically scored factor at 100 points, while delivery capability and sand quality are binary pass/fail thresholds. Offers that fail to meet either delivery or quality requirements will be disqualified regardless of price competitiveness. The solicitation requires strict adherence to Kentucky-specific regulations, including the submission of notarized affidavits for resident or qualified bidder status, potential 15% pricing preferences for eligible entities, and full compliance with state laws regarding AI disclosure, insurance (minimum $1 million liability with AM Best B+ rating), boycott prohibitions, lobbying restrictions, and nondiscrimination obligations under KRS 45.560–45.640. Contractors must also disclose any prior violations of tax, wage, or workplace safety laws and prohibit the use of Commonwealth data to train AI systems. Proposals must be submitted electronically through the Kentucky Vendor Self Service portal by the deadline, with all inquiries due by July 21, 2026. No formal FAR clauses are applied; instead, state procurement language governs contract terms, including provisions prohibiting non-conforming terms, requiring vendor consent for post-award additions, and allowing cancellation with 30 days’ notice. There is no contract value specified, as pricing will be determined by submitted bids, and no electronic invoicing systems like
Dept of Parks - Purchasing

POSTED

3 months ago

CLOSED

3 months ago
View Details
NAICS: 212323
Closed
SLED
Small Business / HUB Participation OpportunityHUB-certified businesses are invited to participate in North Carolina’s Department of Transportation supply chain for sand-related services, including supply, hauling, and processing, under the state’s HUB program. This opportunity is structured as a subcontract and is designed to increase involvement from small and historically underutilized businesses in infrastructure projects. The solicitation is open for responses until June 29, 2026, with no specific solicitation number assigned, and the NAICS code varies depending on the nature of the work. Participation is tied to projects managed by the North Carolina DOT, though exact project locations and performance details are not specified. Interested firms must register and respond through the official state portal prior to the deadline to be considered for inclusion in the transportation supply network under HUB compliance criteria.
Department of Transportation

POSTED

4 months ago

CLOSED

4 months ago
View Details
NAICS: 212323
Closed
Federal
Morganza to the Gulf Hurricane and Storm Damage Reduction Project Sources Sought – Commercial Clay Borrow Source
Solicitation # W912P826SS0008
The U.S. Army Corps of Engineers, New Orleans District, is soliciting sources for commercial clay borrow materials to support the Mississippi River and Tributaries, Morganza to the Gulf Project in Terrebonne and Lafourche Parishes, Louisiana. This solicitation aims to create a pre-approved list of suppliers that could be utilized for various construction contracts related to the hurricane and storm damage reduction efforts under the MTG Project. Responses must be submitted by August 20, 2026, at 11:00 AM local time and should be sent to Taylor H. Brandon via email. For submitting large files, interested parties may request access to DoD SAFE by contacting the primary point of contact. The contract opportunity is open under solicitation number W912P826SS0008 and is managed by the Department of Defense's New Orleans office. Secondary contact is Christopher Nuccio, also with the USACE. This effort is a key component in ensuring sourcing readiness for critical infrastructure projects aimed at protecting communities along the Gulf Coast.
W07V Endist New Orleans

POSTED

6 months ago

CLOSED

about 2 months ago
View Details
NAICS: 212323
Closed
SLED
Mitigation Bank Development & Management
Florida Department of Transportation

POSTED

7 months ago

CLOSED

7 months ago
View Details
NAICS: 212323
Closed
SLED
Baseball Clay
Solicitation # 2025-QQ-616
The contract seeks bids for the supply of baseball clay, with the award going to the responsible and responsive bidder who submits the lowest total bid price not exceeding $50,000. If no acceptable quotes are received below this threshold, the County reserves the right to cancel this solicitation and potentially use an alternative procurement method. The solicitation is designated as 2025-QQ-616 and was posted on January 15, 2026, with the response deadline set for January 19, 2026. The contracting agency is the Parks, Recreation, and Natural Resources department of Florida, operating under the State and Local Government Entity (SLED) classification. The office address is located in Sarasota, FL, and the point of contact for this procurement is Teri Stabler, the Procurement and Contracts Liaison, reachable via email and phone. The contract outlines a straightforward and competitive bidding process aimed at obtaining quality baseball clay for use within the state.
Parks, Recreation, and Natural Resources

POSTED

9 months ago

CLOSED

9 months ago
View Details
NAICS: 212323
Closed
Federal
Construction Aggregates in Oceania
Solicitation # SPE8EG25R0000-5
DLA Troop Support

POSTED

about 1 year ago

CLOSED

about 1 year ago
View Details
NAICS: 212323
Closed
SLED
Request for Quotes: Supply and Delivery of Clay or Silt Materials
Solicitation # QQ20250317
The Bristol Virginia Utilities Authority in Virginia has issued a solicitation for the supply and delivery of clay or silt materials, as specified in the request for quotes. The contract is valued between $20,000 and $50,000 and is intended to secure reliable sourcing of these materials for ongoing utility operations. The posting date for this solicitation is March 17, 2025, with a deadline for responses set for March 24, 2025. Interested vendors are encouraged to review the detailed requirements and submit their proposals within this timeframe. The contract aims to facilitate the procurement of quality clay or silt, essential for the utility’s projects, ensuring timely delivery and adherence to specified standards. Further details and submission information can be accessed through the provided online link.
Bristol Virginia Utilities Authority

POSTED

over 1 year ago

CLOSED

over 1 year ago
View Details
NAICS: 212323
Closed
SLED
Top Soil and Clay
Solicitation # 35/2025
The contract pertains to the procurement of topsoil and clay, with the solicitation identified as RFQ 35/2025, issued by the City of Columbia, Missouri. Bidders are invited to submit their responses either in sealed envelopes delivered in person to the Purchasing Division at 701 E. Broadway, Columbia, MO, or electronically via the designated e-bidding platform. All paper bids must be clearly marked with “RFQ 35/2025” and received by the deadline of February 12, 2025; late submissions will be rejected. The contract's estimated value ranges between $100,000 and $500,000, and the project is managed under the Missouri State Local Economic Development (SLED) organization. The primary point of contact for inquiries is Autumn Klauba, reachable via email at autumn.klauba@como.gov or by phone at 15738175020. Additional details and bid information can be accessed through the provided online link.
City of Columbia

POSTED

over 1 year ago

CLOSED

over 1 year ago
View Details

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