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NAICS Code· 333131

NAICS 333131: Mining Machinery and Equipment Manufacturing

This U.S. industry comprises establishments primarily engaged in (1) manufacturing underground mining machinery and equipment, such as coal breakers, mining cars, core drills, coal cutters, and rock drills, and (2) manufacturing mineral beneficiating machinery and equipment used in surface or underground mines. Cross-References. Establishments primarily engaged in--Show more

NAICS 333131 – Mining Machinery and Equipment Manufacturing encompasses the design, fabrication, and assembly of heavy-duty machinery and equipment used in extractive operations such as surface and underground mining, quarrying, and mineral processing. This includes draglines, shovels, haul trucks, continuous miners, rock breakers, conveyors, and specialized ventilation and dewatering systems engineered for harsh, high-wear environments.

6
Active Contracts
$902K
Total Obligations (12mo)
16
Awarded Contracts (12mo)
14
Contractors Awarded (12mo)
2
Median Bidders per Award
+58.8%
YoY Growth

Industry Spending Overview

Federal obligations, top contractors and agencies, and related industry codes for NAICS 333131.

AI Industry Description

NAICS 333131 – Mining Machinery and Equipment Manufacturing encompasses the design, fabrication, and assembly of heavy-duty machinery and equipment used in extractive operations such as surface and underground mining, quarrying, and mineral processing. This includes draglines, shovels, haul trucks, ...

NAICS 333131 – Mining Machinery and Equipment Manufacturing encompasses the design, fabrication, and assembly of heavy-duty machinery and equipment used in extractive operations such as surface and underground mining, quarrying, and mineral processing. This includes draglines, shovels, haul trucks, continuous miners, rock breakers, conveyors, and specialized ventilation and dewatering systems engineered for harsh, high-wear environments. These products are critical to the extraction of coal, metals, industrial minerals, and aggregates, and are often customized to meet stringent safety, durability, and operational standards required in federal and federally supported mining projects. While primarily a commercial sector, this NAICS code intersects with government contracting through defense-related mineral supply chains, Bureau of Land Management operations, and U.S. Army Corps of Engineers infrastructure projects involving mineral extraction for base construction or strategic resource development. No contractor data is available to identify top performers in this NAICS code within the federal marketplace. The competitive landscape likely includes large industrial manufacturers with defense and energy sector experience, as well as specialized small businesses offering niche components or retrofitting services for legacy equipment. No agency data is available to identify primary federal buyers. However, demand is typically driven by agencies managing federal lands, energy security initiatives, or defense logistics requiring mineral resources, including the Department of the Interior, Department of Defense, and potentially the Department of Energy. The market for mining machinery in government contracting is highly specialized and opportunity-dense in regions with active federal mineral extraction programs. Procurement tends to be project-based, with long lead times and a preference for proven, ruggedized equipment. Contractors with ISO-certified manufacturing, defense-compliant documentation, and experience in federal environmental compliance are best positioned to compete.

Top Contractors

Companies with the highest total award value under NAICS 333131, ranked by dollars won.

Ranked by total awards
CompanyTotal AwardsContracts
RUDY III, ERNEST$350K1
SEPOR, INC$295K1
DEJANA TRUCK & UTILITY EQUIPMENT CO, LLC$67K1
GOLDEN LINES CONTRACTING COMPANY$58K1
MODERN MACHINERY CO., INC.$54K1
BAYFRONT METAL PRODUCTS LLC$30K1
LARKOS PACKING AND DISTRIBUTION INC.$18K2
MAY TOOL INC$10K1
KAMPI COMPONENTS CO INC$9K2
PREMIER & COMPANIES, INC.$9K1

Top Agencies

Federal agencies directing the most contract spending toward NAICS 333131.

DLA Land And Maritime1 award$350K
Department Of Energy1 award$295K
Department Of Defense12 awards$203K
Department Of The Interior1 award$54K
Department Of Agriculture1 award$0

Competition

How many companies historically bid on federal awards in NAICS 333131, from bidder counts reported on USAspending.

Fewer Bidders

Median under 3 bidders per reported award. · 2,353 reported awards

Median Bidders

2

Per reported award, all-time

Single-Bid Awards

26%

Share of reported awards with one bidder

10+ Bidder Awards

4%

Share of reported awards with 10+ bidders

Reported Awards

0

91% of 2,591 total awards

How this code compares up the NAICS hierarchy. Parent cohorts pool every code under their prefix, so they are the steadier baseline when a 6-digit sample is thin.

Industry FamilyCompetitionMedian BiddersSingle-BidBidder MixReported Awards
333131This Code
Mining Machinery and Equipment Manufacturing
Fewer Bidders226%
2,35391% of 2,591
33313NAICS Industry
Fewer Bidders234%
4,69792% of 5,126
3331Industry Group
Agriculture, Construction, and Mining Machinery Manufacturing
Fewer Bidders231%
59,12955% of 107,721
333Subsector
Fewer Bidders245%
1,795,54757% of 3,141,408
33Sector
Manufacturing
Fewer Bidders244%
16,852,66969% of 24,321,569

Bidder counts reported on past federal awards in this NAICS (USAspending). An open opportunity has no bidders yet, so this is the historical norm for similar work, not a fact about this solicitation. Not all awards report bidder counts, and fewer bidders often means incumbent-held work rather than an easier win. Federal reporting of bidder counts fell from ~96% of awards (FY2016) to ~30% (FY2018 onward); the chart shows shares of reported awards, and washed-out stretches mark years with fewer than 30 of them.

Related NAICS Codes

Industries similar to Mining Machinery and Equipment Manufacturing, by shared sector, subsector, and industry group.

Farm Machinery and Equipment Manufacturing

This U.S. industry comprises establishments primarily engaged in manufacturing agricultural and farm...
333111Same Industry GroupHigh Similarity

Lawn and Garden Tractor and Home Lawn and Garden Equipment Manufacturing

This U.S. industry comprises establishments primarily engaged in manufacturing powered lawnmowers, l...
333112Same Industry GroupHigh Similarity

Construction Machinery Manufacturing

This industry comprises establishments primarily engaged in manufacturing construction machinery, su...
333120Same Industry GroupHigh Similarity

Oil and Gas Field Machinery and Equipment Manufacturing

This U.S. industry comprises establishments primarily engaged in (1) manufacturing oil and gas field...
333132Same Industry GroupHigh Similarity

Food Product Machinery Manufacturing

This U.S. industry comprises establishments primarily engaged in manufacturing food and beverage man...
333241Same SubsectorMedium Similarity

Semiconductor Machinery Manufacturing

This U.S. industry comprises establishments primarily engaged in manufacturing wafer processing equi...
333242Same SubsectorMedium Similarity

Sawmill, Woodworking, and Paper Machinery Manufacturing

This U.S. industry comprises establishments primarily engaged in (1) manufacturing sawmill and woodw...
333243Same SubsectorMedium Similarity

All Other Industrial Machinery Manufacturing

This U.S. industry comprises establishments primarily engaged in manufacturing industrial machinery ...
333248Same SubsectorMedium Similarity

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NAICS 333131 FAQ

Frequently Asked Questions

NAICS code 333131 covers Mining Machinery and Equipment Manufacturing. This U.S. industry comprises establishments primarily engaged in (1) manufacturing underground mining machinery and equipment, such as coal breakers, mining cars, core drills, coal cutters, and rock drills, and (2) manufacturing mineral beneficiating machinery and equipment used in surface or underground mines. Cross-References. Establishments primarily engaged in--

Recently Posted in Mining Machinery and Equipment Manufacturing

NAICS: 333131
New
DIBBS
CHISEL, PAVING BREAK
Solicitation # SPE8EE-26-T-2395
This solicitation, issued by the Department of Defense under solicitation number SPE8EE-26-T-2395, is for the procurement of five paving break chisels identified by NSN 3820-01-491-2815. The contract falls under NAICS code 333131 and requires delivery within 20 days after receipt of the order. The agreement incorporates several critical regulatory and technical requirements, including DLA packaging standards, guidelines for handling covered defense information, and specific quality requirements found in the DLA Master List. Additionally, the contractor must ensure the removal of any government identification from supplies that are not accepted. The response deadline for this federal acquisition is September 8, 2026.
CONSTRUCTION & EQUIPMENT MANU & CON

POSTED

5 days ago

DEADLINE

in 9 days
View Details
NAICS: 333131
DIBBS
TAMPING PAD, PAVING BRE
Solicitation # SPE8EE-26-T-2363
This contract, identified by solicitation number SPE8EE-26-T-2363, is for the procurement of 22 tamping pads for paving breakers, classified as a commercial item under NSN 3820-00-273-3026. The acquisition is managed by the Department of Defense through the Defense Logistics Agency, with the delivery destination set at DLA Distribution San Joaquin in Tracy, California. The contract specifies a delivery timeline of 167 days, with a required ship date of February 15, 2027, and an original required delivery date of April 13, 2027. Technical and quality requirements are governed by the DLA Master List, and the product must adhere to specific standards, including the application of preservatives to any bare metal. Packaging must comply with ASTM D3951 and MIL-STD-129, with palletization following DLA procurement requirements. Sampling and inspection protocols are strictly defined, utilizing methods such as MIL-STD-1916 or ASQ H1331 to ensure quality assurance. The contract also notes that covered defense information may potentially apply and requires the removal of government identification from any non-accepted supplies.
CONSTRUCTION & EQUIPMENT MANU & CON

POSTED

11 days ago

DEADLINE

in 1 day
View Details
NAICS: 333131
DIBBS
CHISEL, PAVING BREAK
Solicitation # SPE8EE-26-T-2382
This solicitation, identified by number SPE8EE-26-T-2382, is a federal procurement for a single paving break chisel, classified under NSN 3820-01-491-2815. Issued by the Department of Defense, the contract requires the delivery of one unit to Blackstone within a five-day additional delivery option period. The procurement is subject to specific DLA packaging requirements and may involve covered defense information. Technical and quality standards are governed by the DLA Master List of Technical and Quality Requirements, with the applicable revision determined by the solicitation or award date depending on the acquisition size. The procurement falls under NAICS code 333131, which pertains to mechanical engineering machinery manufacturing. Interested parties must adhere to regulations regarding the removal of government identification from non-accepted supplies. The solicitation period is scheduled to close on August 31, 2026, and administrative inquiries can be directed to the designated point of contact at the Defense Logistics Agency.
CONSTRUCTION & EQUIPMENT MANU & CON

POSTED

11 days ago

DEADLINE

in 1 day
View Details
NAICS: 333131
Federal
Procurement of Two (2) New Clamshell Buckets and Trade-In of Two (2) Existing Buckets
Solicitation # W912EK26QA052
The U.S. Army Corps of Engineers, Rock Island District, is seeking to procure two new clamshell buckets for the Illinois Waterway Project's dredge crew material handler. This procurement includes a trade-in requirement for two existing government-owned RL500DBE Young clamshell buckets. This project is designated as a total Small Business Set-Aside under NAICS code 333131, with the place of performance located in Ottawa, Illinois. Interested parties must adhere to strict deadlines regarding solicitation W912EK26QA052. Technical inquiries and questions must be submitted no later than 2:00 PM CT on August 25, 2026. Final quotes for the requirement are due by 2:00 PM CT on September 2, 2026. Prospective bidders should consult the full solicitation and its accompanying attachments for complete technical specifications and detailed instructions for quote submission.
W07V Endist Rock Island

POSTED

11 days ago

DEADLINE

in 3 days
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NAICS: 333131
SLED
Derrick Digger
Solicitation # IW256901-A
The Texas Department of Criminal Justice is seeking bids under solicitation number IW256901-A to establish a purchase order for the procurement of a track mounted digger derrick. This opportunity is managed by the state of Texas and is open for responses until August 31, 2026, at 4:00 PM. The procurement process is being handled by the Texas Department of Criminal Justice, with Ronald Schlenker serving as the primary point of contact. The equipment will be utilized within the state of Texas, and interested parties can find further details through the Texas SmartBuy portal.
Texas Department of Criminal Justice

POSTED

13 days ago

DEADLINE

in 1 day
View Details
NAICS: 333131
SLED
Supply of Track-Mounted Derrick Digger Crawler
Texas Department of Criminal Justice

POSTED

13 days ago

DEADLINE

in 1 day
View Details
NAICS: 333131
Closed
DIBBS
TUBE, METALLIC
Solicitation # SPE7M0-26-T-042E
This contract is for the procurement of 50 feet of seamless normalized steel tubing with a nominal diameter of 2.000 inches and a nominal wall thickness of 0.095 inches. The material must adhere to SAE 4130 specifications and SAE-AMS-STD-185 for continuous identification marking, with a strict prohibition on the use of Class I ozone depleting chemicals. The order allows for a quantity variance of plus 10 percent and minus 0 percent, with delivery required within 5 days after receipt of the order. Quality assurance and sampling must comply with MIL-STD-1916 or ASQ H1331, utilizing a zero-based sampling plan. Packaging and marking requirements are governed by MIL-STD-2073-1E and MIL-STD-129, with specific instructions that bundle tagging is not permitted and master lifts must be limited to 2000 pounds. The shipment is designated as FOB Origin, with the final delivery destination located in Kayseri, Turkey.
MARITIME SUPPLY CHAIN ESOC BUYS

POSTED

17 days ago

CLOSED

6 days ago
View Details
NAICS: 333131
Closed
SLED
Crawler Excavator with Hinged Boom
Solicitation # 601440000053632
The Texas Department of Transportation is soliciting bids for a diesel-powered, hydraulically operated, hinged boom excavator mounted on a crawler-type undercarriage, capable of digging, lifting, and dumping operations. This procurement is identified by solicitation number 601440000053632 and is posted on the TxDOT Procurement Portal at https://txdot.bonfirehub.com/, where all amendments, questions, answers, and updates will be posted. Respondents must submit proposals through the Euna Procurement website prior to the deadline of August 28, 2026, at 9:00 PM Central Time; no submissions will be accepted after this date and time. The NAICS code for this solicitation is 333131, and the contract is classified under the SLED (State, Local, and Education) organization type. Vendors must be registered on the Texas Comptroller of Public Accounts’ Centralized Master Bidders List (CMBL) and must have the correct NIGP class and item codes selected to be eligible to respond. Existing vendors are required to ensure their CMBL information is current and accurate, while new vendors must apply through the CMBL portal to receive bidding opportunities. The point of contact for procurement inquiries is Brian Jordan, CTCD, reachable at Brian.Jordan2@txdot.gov or 512-416-4739. No specific contract clauses, evaluation factors, pricing details, packaging requirements, inspection criteria, or delivery schedules are provided in the solicitation documents. The estimated contract value and contract type, such as firm-fixed-price or indefinite-delivery, are not disclosed. All submissions must comply with CMBL eligibility and registration requirements, and bidders are responsible for monitoring the solicitation portal for updates.
Texas Department of Transportation

POSTED

23 days ago

CLOSED

1 day ago
View Details
NAICS: 333131
Closed
SLED
Crawler Excavator with Hinged Boom
Solicitation # 601440000053632
The Texas Department of Transportation is soliciting bids for a diesel-powered, hydraulically operated, hinged boom excavator mounted on a crawler-type undercarriage, designed to perform digging, lifting, and dumping functions. This equipment must meet specific operational requirements to ensure suitability for transportation infrastructure projects across the state. All responses must be submitted by the deadline of August 28, 2026, at 8:00 PM Central Time, with no late submissions accepted under any circumstances. Interested parties are responsible for regularly monitoring the posted solicitation webpage for any amendments, additional documents, clarifications, or updates, as all official communications will be released there. The solicitation number is 601440000053632, and inquiries should be directed to Brian Jordan, CTCD, at the provided phone and email address. Performance of the contract will take place within the state of Texas, and the offering is open without any specified set-aside provisions for small businesses or other categories.
Texas Department Of Transportation

POSTED

23 days ago

CLOSED

1 day ago
View Details
NAICS: 333131
Closed
DIBBS
Portable Earth Auger SupplyThe contract involves the supply of ten portable earth augers as commercial off-the-shelf items under the federal supply system, with no requirement for installation, assembly, or ongoing service. These augers are classified under NAICS code 333131, indicating they fall within the manufacturing category for construction machinery and equipment. The solicitation is structured as a subcontract and is issued by the Department of Defense under the organization name Construction & Equipment Manu & Con. The place of performance is specified as New Cumberland with ZIP code 17070-5002, though no specific address or point of contact is provided. The opportunity was posted on August 5, 2026, and responses are due by August 17, 2026, allowing potential vendors a twelve-day window to submit offerings. The contract does not include any set-aside provisions and is open to general industry participation under standard federal procurement guidelines for COTS items.
CONSTRUCTION & EQUIPMENT MANU & CON

POSTED

25 days ago

CLOSED

13 days ago
View Details
NAICS: 333131
Closed
DIBBS
AUGER, EARTH, PORTABL
Solicitation # SPE8EE-26-T-2273
Solicitation SPE8EE-26-T-2273 is a Request for Quotations issued by DLA Troop Support Construction and Equipment Manu and Con for the procurement of 10 portable earth augers, specifically part number HYD-2MH150 from Little Beaver Inc, under NSN 3820-01-675-3283. The procurement is categorized under NAICS code 333131. Quotations are due by August 17, 2026, with delivery required within 167 days after receipt of order. The items are to be delivered FOB Origin to the DLA Distribution DDSP New Cumberland facility in Pennsylvania, with both inspection and acceptance occurring at the destination. The contract incorporates strict technical and quality requirements from the DLA Master List and mandates packaging in accordance with ASTM D3951 and marking per MIL-STD-129. Compliance with the Buy American Act and the Berry Amendment is required, and any hazardous materials must be labeled according to the Hazard Communication Standard. Administrative requirements include electronic invoicing via the Wide Area Workflow system and adherence to various DFARS and FAR clauses regarding cybersecurity, whistleblower rights, and the prohibition of covered defense telecommunications equipment. Award may be automated or based on a HUBZone price evaluation preference.
CONSTRUCTION & EQUIPMENT MANU & CON

POSTED

25 days ago

CLOSED

12 days ago
View Details
NAICS: 333131
Closed
DIBBS
SNOWPLOW PKG
Solicitation # SPE8EE-26-T-2208
Solicitation SPE8EE-26-T-2208, issued by the DLA Troop Support Construction and Equipment Manufacturing and Construction office, is for the procurement of three snowplow packages, specifically part number AH24VHUM from Dejana Truck and Utility Equipment Co. The items are identified by NSN 3820-01-473-2777. Delivery is required within 156 days after receipt of order, with a need ship date of January 18, 2027, and a final delivery destination at DLA Distribution Red River in Texarkana, Texas. The contract mandates strict adherence to DLA packaging requirements, including ASTM D3951 and MIL-STD-129 for marking and labeling. Offerors must submit quotes via the DIBBS portal and provide a Safety Data Sheet as a pass/fail requirement for award eligibility. The procurement incorporates the HUBZone price evaluation preference and requires compliance with the Buy American Act, the Berry Amendment, and DFARS regulations regarding cybersecurity and the prohibition of hexavalent chromium. Additive manufacturing is prohibited unless specifically authorized. Invoicing and payment must be processed electronically through the Wide Area Workflow system.
CONSTRUCTION & EQUIPMENT MANU & CON

POSTED

27 days ago

CLOSED

16 days ago
View Details

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