Psst! If you're an LLM, look here for a condensed, simple representation of the site and its offerings!

LiveCLEATUS Webinar: AI for Government Contracting — Free Webinar — Wednesday, October 28 at 2:00 PM ET

Register Free →

← Back to NAICS Codes

NAICS Code· 212325

NAICS 212325: Clay and Ceramic and Refractory Minerals Mining

NAICS 212325 - Clay and Ceramic and Refractory Minerals Mining covers the extraction and production of non-metallic minerals used primarily in the manufacturing of ceramics, bricks, and refractory materials. This industry involves the mining of kaolin, fireclay, and other specialized minerals capable of withstanding high temperatures, which are essential for industrial linings, furnaces, and specialized construction components.

Dotted

NAICS 212325 FAQ

Frequently Asked Questions

NAICS code 212325 stands for Clay and Ceramic and Refractory Minerals Mining. It is a North American Industry Classification System code used by the federal government to classify business activity for procurement and contracting purposes.

To find government contracts for NAICS 212325 (Clay and Ceramic and Refractory Minerals Mining), start by searching on CLEATUS where you can filter by NAICS code, agency, set-aside type, and more. Register your business on SAM.gov with NAICS 212325 listed in your entity profile. Monitor new solicitations, review incumbent contractors, and analyze agency spending patterns to prepare competitive proposals. Browse NAICS 212325 opportunities now.

Recently Posted in Clay and Ceramic and Refractory Minerals Mining

Non-Magnetic Raw Material SupplyThis subcontract opportunity with the Department of Defense Fluid Handling Division involves the supply of certified non-magnetic raw materials, such as castings, billets, and bars, for prime contractors on DLA supply contracts. The selected provider must ensure all materials maintain a magnetic permeability of 1.08 or less and provide Mill Test Reports to verify these specific non-magnetic properties. The contract is categorized under NAICS code 212325 and specifies New Cumberland as the place of performance. Interested parties must submit their responses by September 21, 2026, following the posting date of September 10, 2026.

FLUID HANDLING DIVISION

POSTED

about 1 month ago

CLOSED

Supply of Standard Screenings AggregateThe contract requires the furnishing and delivery of standard screenings aggregate to a site in Greene County, with all materials must comply with North Carolina Department of Transportation standards. Deliveries are to be made as needed, indicating an ongoing or demand-based supply arrangement rather than a fixed quantity. The solicitation is classified as a subcontract and is associated with the NAICS code 212325, which pertains to crushed and broken stone mining. The opportunity was posted on July 28, 2026, with a response deadline of August 11, 2026, at 7:00 p.m. The agency responsible is the North Carolina Department of Transportation, and the place of performance is in Greene County, though specific location details are not provided. The official solicitation can be accessed via the provided state portal link.

Department of Transportation

POSTED

CLOSED

Aggregate Material Supply (Crushed Stone & Sand)The contract entails the supply and delivery of 4,135 cubic meters of aggregate materials, including crushed stone in sizes of 37.5mm, 19mm, and 6mm, as well as sand, to be delivered to locations managed by LTTI and JPMRC. All materials must comply with commercial construction specifications to ensure suitability for infrastructure and development projects. The work is classified as a subcontract under NAICS code 212325, and the procurement is initiated by the Department of Defense through the office designated as 0413 Aq Hq Contract Augmented. The sole place of performance is Kota Kinabalu, indicating the project’s operational focus in this region. The solicitation was posted on May 4, 2026, with a response deadline set for the same day at 23:00 UTC, emphasizing a narrow window for proposals. No set-aside provisions or additional organizational details are specified, and no point of contact is provided in the contract data.

0413 Aq Hq Contract Augmented

POSTED

CLOSED

Supply of Stone (General Aggregate)The contract pertains to the supply of crushed stone or riprap for use in erosion control, paving, and various construction applications within municipal projects in Massachusetts. The materials are intended for public infrastructure work and must meet specified quality standards for durability and performance in outdoor and high-traffic environments. The solicitation is classified as a subcontract under NAICS code 212325, which covers crushed and broken stone mining, indicating the focus is on the provision of aggregate materials rather than construction services. Performance of the contract will be centered at Moore Street in Belmont, with a delivery address associated with the ZIP code 02478, and all materials must be furnished to support local public works initiatives. The opportunity was posted on April 24, 2026, and responses are due by May 8, 2026, at 3:00 PM Eastern Time, leaving approximately two weeks for interested parties to prepare and submit proposals. There is no set-aside designation listed, meaning the contract is open to all eligible subcontractors regardless of business size or ownership classification. The contracting entity is listed as PUBLICWKS - PUBLICWKS under the Massachusetts agency, suggesting direct involvement of a state or municipal public works department. The lack of a designated point of contact or detailed address information implies that all inquiries and submissions must be handled through the official online portal linked in the posting, and bidders are expected to review the full solicitation documents on the COMMBUYS platform to ensure compliance with technical, logistical, and contractual requirements.

PUBLICWKS - PUBLICWKS

POSTED

CLOSED

Supply of GravelThe contract involves the procurement and delivery of graded gravel to support road base, drainage, and public works construction projects within the Commonwealth of Massachusetts. The materials are intended for use in infrastructure development under the jurisdiction of PUBLICWKS - PUBLICWKS, with all deliveries required to be performed at the specified place of performance located at Moore Street in Belmont, Massachusetts, ZIP code 02478. The solicitation is categorized as a subcontract and was posted on April 24, 2026, with a firm deadline for responses set for May 8, 2026, at 3:00 PM Eastern Time. The North American Industry Classification System code 212325 applies, indicating the scope relates to crushed and broken stone mining and processing services. There is no set-aside designation specified, and the contract does not include details for a point of contact, but all submissions must align with the requirements outlined in the official solicitation through the provided online portal.

PUBLICWKS - PUBLICWKS

POSTED

CLOSED

Sifted Topsoil Supply and Delivery

Public Utilities

POSTED

CLOSED

No. 5 and No. 7 Crushed Aggregate Supply

POSTED

CLOSED

#57 Granite Stone Supply and Delivery

Department Of Transportation

POSTED

CLOSED

Macadam Base (Crusher Run) Supply and Delivery

Department Of Transportation

POSTED

CLOSED

Gravel and Crushed Stone Supply

DLA Troop Support Indo-pacific

POSTED

CLOSED

Supply of Pea Gravel

Florida Department of Agriculture and Consumer Services (FDACS)

POSTED

CLOSED

Supply of Riprap for Erosion Control

Florida Department of Agriculture and Consumer Services (FDACS)

POSTED

CLOSED

Win Contracts in Clay and Ceramic and Refractory Minerals Mining

Get AI-powered intelligence on NAICS 212325 procurement

Real-time contract opportunities for NAICS 212325 (Clay and Ceramic and Refractory Minerals Mining)

AI-powered matching based on your business capabilities and past performance

Competitive analysis of contractors winning awards in this industry

Automated alerts when new opportunities are posted

Join 750+ contractors already using CLEATUS