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NAICS Code· 212312

Crushed and Broken Limestone Mining and Quarrying

This U.S. industry comprises (1) establishments primarily engaged in developing the mine site, mining or quarrying crushed and broken limestone (including related rocks, such as dolomite, cement rock, marl, travertine, and calcareous tufa) and (2) preparation plants primarily engaged in beneficiating limestone (e.g., grinding or pulverizing). Cross-References. Establishments primarily engaged in--Show more

NAICS 212312 – Crushed and Broken Limestone Mining and Quarrying covers the extraction, crushing, screening, and processing of limestone rock into aggregate products used in infrastructure construction, roadbed stabilization, and erosion control. This sector supports critical civil works projects including highway construction, airport runways, railway ballast, and military base development.

5
Active Contracts
$31.9M
Total Obligations (12mo)
85
Awarded Contracts (12mo)
34
Contractors Awarded (12mo)
-92.8%
YoY Growth

Awarded Contractors

Companies that have received federal awards classified under NAICS 212312.

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NAICS 212312 FAQ

Frequently Asked Questions

NAICS code 212312 covers Crushed and Broken Limestone Mining and Quarrying. This U.S. industry comprises (1) establishments primarily engaged in developing the mine site, mining or quarrying crushed and broken limestone (including related rocks, such as dolomite, cement rock, marl, travertine, and calcareous tufa) and (2) preparation plants primarily engaged in beneficiating limestone (e.g., grinding or pulverizing). Cross-References. Establishments primarily engaged in--

Recently Posted in Crushed and Broken Limestone Mining and Quarrying

NAICS: 212312
Federal
Detroit Project Office Stone SupplyThe US Army Corps of Engineers, Detroit Project Office is soliciting proposals for the supply and delivery of stone required for one of its structural projects, with the specific materials and requirements detailed in the attached Performance Work Statement. This procurement is designated as a Total Small Business Set-Aside under FAR 19.5, exclusively available to qualified small businesses, and falls under NAICS code 212312 for crushed and prepared stone. The solicitation, identified by number W911XK26QA016, was posted on June 26, 2026, with responses due by 6:00 PM Eastern Time on July 28, 2026. Performance of the work is expected to occur in the Detroit, Michigan area, specifically with a place of performance zip code of 48209. The contract is managed by the Department of Defense through the W072 Endist Detroit office, located at 48226-5000, Michigan. Point of contact for inquiries is Noah Bruck, with Matthew McDuffie as the secondary contact, both reachable via official USACE email addresses. Interested parties must submit proposals through the SAM.gov portal using the provided link.
W072 Endist Detroit

POSTED

10 days ago

DEADLINE

in 22 days
View Details
NAICS: 212312
Federal
LA-CATAHOULA NWR-CRUSHED LIMESTONE DELIVThe contract solicitation 140F1G26Q0056 seeks the delivery of 800 tons of 610 Crushed Limestone to five designated locations within the Catahoula National Wildlife Refuge in Louisiana, with quantities allocated as 200 tons each to Big Bend Road, Shop Parking Lot, and Minnow Pond ATV Trail, and 100 tons each to Dempsey Lake Road Entrance and Dempsey Lake End of Road. Deliveries must be coordinated with the Refuge Manager at least seven days in advance due to weather and accessibility constraints, and all material must be stockpiled according to provided site maps. The solicitation is a Total Small Business Set-Aside under FAR 19.5, restricting eligibility to small business concerns, and requires offerors to submit completed representations and certifications, including proof of small business status, though no such submissions are included in the provided data. Pricing details are not specified in the solicitation, making the contract value indeterminable, and the delivery period extends through December 31, 2026, with no formal FOB terms or payment schedule defined beyond the mandate to use the Treasury’s Invoice Processing Platform for electronic submissions. The contract incorporates numerous Federal Acquisition Regulation clauses regarding ethics, labor standards, supply chain security, and compliance, including requirements for a code of business ethics, whistleblower protections, minimum wage adherence under Executive Order 14026, paid sick leave, prohibition of certain foreign-made telecommunications and surveillance equipment, and restrictions on subcontracting with debarred entities. Inspection and acceptance occur on-site at the refuge locations, with verification relying on submitted documentation including a Roadway Surfacing Material Form and applicable maps, though no technical specifications such as ASTM or DOT standards are cited. The solicitation requires submissions via Standard Form 18 with attachments, and proposals must be physically mailed to the Falls Church, VA office by 5:00 p.m. CDT on July 8, 2026. While technical oversight is coordinated through the Refuge Manager in Louisiana and an administrative contact in Virginia, no officially designated Contracting Officer’s Representative or Contracting Officer is identified. The solicitation permits contract extensions under FAR clauses 52.217-8 and 52.217-9, and includes provisions for accelerated payments to small business subcontractors and preference for U.S.-flagged vessels in transportation, but contains no evaluation factors, award basis, or scoring methodology, leaving the
It Goods Fws

POSTED

12 days ago

DEADLINE

in 2 days
View Details
NAICS: 212312
SLED
Road Materials, Aggregate for Surface TreatmentsCollin County Public Works Department is seeking bids for the supply of various types of aggregate for surface treatments to maintain and improve over 600 miles of county roads, adhering to TxDOT Standard Specifications for Construction and Maintenance of Highways, Streets and Bridges, 2024 Edition. The solicitation, numbered 2026-278, requires delivery of Type B Grade 3, 4, and 5 aggregates to multiple stockpiles across McKinney, Farmersville, Weston, Copeville, and Old Valdasta, with specific tonnage amounts for each location, as well as one-ton pickup quantities for each grade. All materials must be clean, free of debris, new, unused, and of current manufacture, meeting the highest standards of engineering and manufacturing. Bidders must submit pricing that includes all delivery, hauling, fuel, and two hours of demurrage costs under FOB Inside delivery terms at designated locations, with no additional payment for freight or setup. The bid price must remain fixed for twelve months from award, and evaluation will primarily focus on the lowest price per ton, adjusted by round-trip distance from the bidder’s plant to the McKinney stockpile using the current IRS mileage rate. Other considerations include past performance with the county, ability to meet delivery schedules, minimum delivery quantities, and records of integrity and ethics. Bidders are required to comply with a comprehensive set of legal, ethical, and operational conditions under Texas law and local regulations, including adherence to the Uniform Commercial Code, Texas Government Code provisions on conflicts of interest, debarment, immigration compliance, insurance requirements, and cybersecurity obligations. Required documentation includes a completed W-9, Conflict of Interest Questionnaire, and a Recycled Material Content Affidavit if seeking preferences. Insurance must cover commercial general liability, workers’ compensation, and commercial automobile liability, with certificates submitted upon award. Contracts exceeding $25,000 require a payment bond, and those over $100,000 require a performance bond. Delivery must occur within 48 hours of purchase order receipt, and all loads require signed delivery tickets from Collin County personnel for payment. Invoices must be mailed to the Auditor’s Office with the correct purchase order number and a legible receipt signature. Bidders must not be federally suspended or debarred, must certify legal employment of all relevant employees, and must immediately notify the county of any data breaches involving its information. Proposals must be submitted electronically through the OpenGov portal
Public Works

POSTED

13 days ago

DEADLINE

in 10 days
View Details
NAICS: 212312
Closed
SLED
Cushenbury Mine Project (Western Joshua Tree Conservation Act (WJTCA) Incidental Take Permit No. 1927-ITP-2024-083-06 (ITP)The California Department of Fish and Wildlife has issued an incidental take permit to Mitsubishi Cement Corporation for the Cushenbury Mine Project, authorizing the incidental take of 2,896 western Joshua trees as a result of mining operations on approximately 278.2 acres in San Bernardino County. The project involves the development of two quarries—the South Quarry, which will operate over a 120-year period, and the West Pit, which is already underway and expected to continue for decades. Activities include clearing, grading, excavation, vegetation removal, road construction, blasting, and eventual reclamation, supported by both temporary and permanent haul roads. The permit is issued under Section 1927.3 of the Fish and Game Code and aligns with the Western Joshua Tree Conservation Act and the California Endangered Species Act, ensuring compliance with legal protections for the threatened species. Mitigation and conservation measures are required to offset the impact of tree loss, with ongoing monitoring and reclamation efforts mandated as part of the permit conditions. Contract administration and oversight are managed by the California Department of Fish and Wildlife in coordination with San Bernardino County officials, with point of contact provided for environmental and planning inquiries.
San Bernardino County

POSTED

14 days ago

CLOSED

18 days ago
View Details
NAICS: 212312
Awarded
Federal
56--TX-FWS HAGERMAN NWR-RIP RAPThe contract is for the procurement, delivery, and stockpiling of 1,400 tons of 12 to 18 inch natural stone rip-rap for shore bank stabilization at the Hagerman National Wildlife Refuge located at 2118 Hagerman Sandy Park Road, Sadler, TX 76264. This is a firm-fixed price acquisition issued as a Request for Quote under solicitation number 140FS226Q0117 by the U.S. Fish and Wildlife Service, Sat Team 2, within the Department of the Interior, with the contracting office based in Falls Church, VA. The contract is a total small business set-aside under FAR 19.5, and performance is required between June 17, 2026, and September 30, 2026, with a firm delivery deadline of September 30, 2026. The contractor must submit product data, provide weight tickets with every load delivered, and verify the quarry source with documentation detailing ownership, physical location, and proximity to the delivery site, along with evidence of material availability—either through ownership or a signed letter from the quarry dated within 30 days of the offer closing. The evaluation is based on a pass/fail technical acceptability gate, which includes compliance with all specification requirements; past performance, requiring three examples of similar government work; and price, which becomes the deciding factor only after technical and past performance acceptability is confirmed. The award will be made using a best value trade-off approach. The contract incorporates critical FAR clauses including 52.212-1, 52.212-4, 52.212-5, 52.202-1, 52.233-1, and 52.252-2, with FAR 52.212-5 attached. All proposals must include the solicitation number, offeror name and contact details, a current Unique Entity Identifier, and a valid SAM.gov registration. The contractor must comply with multiple federal regulations including the Prompt Payment Act, Buy American Act, Contract Work Hours and Safety Standards, Kickbacks statute, procurement integrity requirements, and prohibitions related to trafficking in persons and confidential internal agreements. All payment requests must be submitted electronically via the Treasury’s Invoice Processing Platform in accordance with 5 CFR part 1315. The bid price
Sat Team 2 Fws

POSTED

18 days ago

CLOSED

25 days ago
View Details
NAICS: 212312
Closed
SLED
IFB 161045 - Delivered Aggregate No.26The Virginia Department of Transportation is seeking bids from qualified firms to supply, deliver, and spread Crushed Grade 26 stone on an as-needed basis. This work will take place at Area Headquarters located in Mecklenburg County and Brunswick County, within the South Hill Residency of VDOT's Richmond District. The contract involves providing the aggregate material either directly onto roadways or stockpiling it for future use. Bidders must submit their responses by July 2, 2026, for solicitation IFB-122586, titled "IFB 161045 - Delivered Aggregate No.26." The procurement is managed by the Virginia Department of Transportation under the SLED organization type. For further information or inquiries, interested parties can contact Michelle Shaffer via email or phone. The contract emphasizes timely delivery and spreading of the aggregate material to support VDOT’s infrastructure maintenance efforts in the designated Virginia counties.
Virginia Department of Transportation

POSTED

19 days ago

CLOSED

4 days ago
View Details
NAICS: 212312
Closed
Federal
ADK Range Crushed StoneThis solicitation, issued as a Request for Quotation under number W50S8N26QA021, seeks a total small business set-aside award for the delivery of 2,000 net tons of DOT grade, 3/4 minus crushed stone to the Adirondack Air Gunnery Range at Russell Turnpike Rd, Gouverneur, NY 13642. The procurement is governed under NAICS code 212312 with a small business size standard of 500 employees, and only small businesses may respond. Award will be made on the basis of lowest price, with all shipping and delivery costs required to be included in the quoted price. Delivery must be scheduled around Air Force and Army aircraft operations and is restricted to weekdays between 7:30 a.m. and 3:30 p.m. due to safety protocols. The contract requires compliance with stringent labeling and identification standards under MIL-STD-130 and MIL-STD-129, mandating machine-readable unique item identifiers and proper packaging markings verified using approved automatic identification technology. Performance is scheduled for completion by July 30, 2026, with FOB destination terms placing full transportation responsibility on the contractor. All offers must be submitted electronically to Briana McCaffery no later than 2:00 p.m. Eastern Time on June 25, 2026, and must be completed on Standard Form 1449, with mandatory completion of specific blocks and submission in U.S. currency and the English language. Contractors must be active and registered in SAM, certify small business status, and affirm compliance with Buy American provisions, prohibitions on covered defense telecommunications equipment, trafficking in persons, and other federal ethics and safety regulations. Payment will be processed electronically via WAWF using specified DoDAAC codes, with accelerated payments mandated for small business subcontractors, and all invoices must be supported by proper receiving reports and documentation per DFARS requirements.
W7NR Uspfo Activity Nyang 174

POSTED

19 days ago

CLOSED

11 days ago
View Details
NAICS: 212312
Awarded
Federal
56--IL-CALHOUN DIVISION-ERFO FUNDED ROCK CONThe contract is a sole-source award under FAR Part 13 and the Simplified Acquisition Threshold for the delivery of CA-6 crushed limestone aggregate to the Two Rivers National Wildlife Refuge in Illinois, specifically along Calhoun Wetlands Road and Swan Lake Levee Road. The procurement was justified based on the unique proximity of the contractor, Calhoun Quarry, to the delivery site, its demonstrated reliability in past performance, and the absence of viable alternative suppliers. The contract was issued by the U.S. Fish and Wildlife Service, under the Department of the Interior, with the contracting office located in Falls Church, Virginia, and was signed on May 28, 2026, with a solicitation posted on June 17, 2026. Funding is provided through the ERFO program, though no specific contract value is stated, and the acquisition was structured without line-item pricing, cost data, or formal financial breakdowns. Delivery is performed via tailgate spread method, and acceptance is expected at the designated sites within the refuge, though no formal inspection criteria, quality standards, or packaging specifications are detailed. The contracting officer is Solmaz Salih, and the program officer is Charles Deutsch, both of whom certified the sole-source justification; however, no COR or COTR is identified. No subcontracting, socioeconomic certifications, or representational statements from the offeror were included, and there are no listed contract clauses, attachments, evaluation factors, or special requirements beyond the statutory basis for single-source procurement. The delivery schedule, FOB terms, invoicing methods, and formal payment instructions are also not specified, and the contract does not include options or performance metrics beyond the successful placement of the material.
It Goods Fws

POSTED

19 days ago

CLOSED

about 1 month ago
View Details
NAICS: 212312
Closed
SLED
Crushed Stone/Sand 2026The contract titled "Crushed Stone/Sand 2026" is a solicitation issued by the Public Works department of Missouri, specifically linked to the city of Florissant. It aims to procure critical materials such as crushed stone and sand necessary for a variety of operations during the upcoming fiscal year. These materials will support essential activities including roadway maintenance, winter storm management, bedding for water and sewer lines, volumetric concrete truck production, and general infrastructure repairs. The solicitation was posted on June 15, 2026, with a response deadline set for June 30, 2026. The contract is managed by the Missouri Public Works office located in Florissant, MO, and is directed towards suppliers capable of meeting the outlined material needs. The primary contact for this solicitation is Jason Timme, the Street Superintendent, while Melanie Bringer from Purchasing serves as the secondary contact. Vendors interested in participating or requiring further details can reach out via the provided email addresses or phone numbers. No specific set-aside requirements or NAICS codes are indicated for this contract. The solicitation is accessible online for prospective bidders through the relevant procurement portal.
Public Works

POSTED

21 days ago

CLOSED

6 days ago
View Details
NAICS: 212312
Closed
Federal
Sources Sought Rathbun Lake Project, Shoreline Stone Protection, USACE Approved Quarry and Delivery to SiteThe U.S. Army Corps of Engineers, Kansas City District, is conducting market research through a Sources Sought notice for the Rathbun Lake Project Shoreline Stone Protection in Centerville, Iowa, seeking qualified firms capable of supplying and delivering riprap stone from USACE-approved quarries. The requirement is classified under NAICS code 212312, with a small business size standard of 750 employees, and the government is evaluating potential set-asides for small businesses or full and open competition based on responses. The stone must meet strict gradation specifications, including 100% of material weighing between 500-691 lbs, 50% between 130-205 lbs, and 15% between 41-102 lbs, with all material being durable, clean, and free of cracks, blast fractures, seams, or defects that could compromise longevity. Delivery must occur at a minimum rate of 1,500 tons per day using only standard end-dumping trucks, between 7 a.m. and 5 p.m. Monday through Friday, excluding federal holidays, with deliveries limited to one site at a time and stone dropped no higher than 8 feet. Materials must be quarried from approved sources or undergo a 60-workday testing phase if unapproved, and all stone must undergo a 14-day curing period prior to delivery. The contractor is responsible for conducting physical testing per ASTM standards for gradation, density, absorption, freeze-thaw, wetting-drying, and LA abrasion, with tests required every 15,000 tons, and all weighing equipment must comply with NIST HB 44. Firms must submit a capability statement not exceeding 15 pages in PDF format, including company profile details, socio-economic status under NAICS 212312, joint venture information if applicable, quarry location and approval status, mobilization distance, confirmation of delivery capacity, technical testing experience, and up to three similar USACE projects completed within the last five years. Compliance with the Revolutionary FAR Overhaul 52.219-14 Limitations on Subcontracting is mandatory, and the delivery portion of the contract will be subject to Service Contract Act wage determinations. All responses must be emailed to Angella Curran by 12:00 p.m. CST on June 22, 2026, with the subject line including
W071 Endist Kansas City

POSTED

21 days ago

CLOSED

14 days ago
View Details
NAICS: 212312
Closed
Federal
Riprap Stone Supply from USACE-Approved QuarryThis contract involves the supply of 67,451 tons of durable limestone riprap that must adhere to specific gradation and ASTM testing standards. The riprap is intended for shoreline erosion control at Rathbun Lake, ensuring that materials are both resilient and suitable for long-term environmental protection. The procurement is classified under NAICS code 212312, which relates to quarrying operations. The contract is a subcontract opportunity posted by the Department of Defense through the W071 Endist Kansas City office, with performance expected in Centerville. The solicitation was posted on June 15, 2026, with a submission deadline of June 22, 2026. The source of the riprap must be a USACE-approved quarry, indicating strict quality control and compliance requirements. This opportunity targets suppliers capable of delivering large volumes of high-quality riprap within a short timeframe to support the infrastructure project.
W071 Endist Kansas City

POSTED

22 days ago

CLOSED

14 days ago
View Details
NAICS: 212312
Closed
Federal
Quarry Operations and Stone Processing ManagementThe contract involves the management of quarry operations focused on extraction, crushing, sizing, and stockpiling of riprap stone to ensure a consistent supply of clean, compliant material. The stone must be stored above ground and graded to facilitate proper drainage, meeting required standards for quality and usability. The work is primarily centered in Centerville and falls under NAICS code 212312, which pertains to the quarrying sector. Issued by the Department of Defense office W071 Endist Kansas City, this subcontract opportunity was posted on June 15, 2026, with a response deadline of June 22, 2026. The contract emphasizes maintaining continuous operations to support the consistent availability of riprap stone, critical for drainage and construction projects. No specific set-aside type or organization requirements are noted, and the solicitation number and point of contact are not provided in the available data.
W071 Endist Kansas City

POSTED

22 days ago

CLOSED

14 days ago
View Details

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