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NAICS Code· 213115

NAICS 213115: Support Activities for Nonmetallic Minerals (except Fuels) Mining

This U.S. industry comprises establishments primarily engaged in providing support activities, on a contract or fee basis, for the mining and quarrying of nonmetallic minerals (except fuel) and for the extraction of nonmetallic minerals (except geophysical surveying and mapping, site preparation, construction, and transportation activities). Exploration for these minerals is included in this industry. Exploration services include traditional prospecting methods, such as taking core samples and making geological observations at prospective sites. Cross-References. Establishments primarily engaged in--Show more

NAICS 213115 – Support Activities for Nonmetallic Minerals (except Fuels) Mining encompasses specialized services that enable the extraction, processing, and site management of nonfuel minerals such as sand, gravel, limestone, gypsum, clay, and industrial minerals. This includes site preparation, drilling and blasting support, haul road construction, dust suppression, water management, reclamation planning, and environmental compliance monitoring.

3
Active Contracts
$183K
Total Obligations (12mo)
5
Awarded Contracts (12mo)
2
Contractors Awarded (12mo)
1
Median Bidders per Award
-69.1%
YoY Growth

Industry Spending Overview

Federal obligations, top contractors and agencies, and related industry codes for NAICS 213115.

AI Industry Description

NAICS 213115 – Support Activities for Nonmetallic Minerals (except Fuels) Mining encompasses specialized services that enable the extraction, processing, and site management of nonfuel minerals such as sand, gravel, limestone, gypsum, clay, and industrial minerals. This includes site preparation, dr...

NAICS 213115 – Support Activities for Nonmetallic Minerals (except Fuels) Mining encompasses specialized services that enable the extraction, processing, and site management of nonfuel minerals such as sand, gravel, limestone, gypsum, clay, and industrial minerals. This includes site preparation, drilling and blasting support, haul road construction, dust suppression, water management, reclamation planning, and environmental compliance monitoring. These activities are critical to sustaining infrastructure projects, construction material supply chains, and defense-related construction initiatives where nonmetallic aggregates are essential for concrete, asphalt, and fortification works. Within the federal contracting landscape, this NAICS serves as a foundational enabler for civil works, military base development, and expeditionary construction programs, often contracted under broader engineering and construction support categories. Kleinfelder Inc. stands as the leading contractor in this sector, offering integrated engineering, environmental, and construction support services tailored to nonmetallic mineral operations. The competitive landscape is dominated by mid-to-large-sized engineering and environmental firms with expertise in geotechnical services, regulatory permitting, and mine site remediation, rather than traditional mining operators. The Department of Defense is the primary federal buyer, driving demand through military construction projects, range maintenance, airfield and roadbed development, and expeditionary logistics infrastructure. Programs requiring durable, locally sourced aggregates for forward operating bases and training facilities sustain consistent procurement activity in this niche. The market is characterized by high technical barriers to entry due to regulatory compliance, environmental permitting, and site-specific geology requirements. Opportunities exist for firms with proven capabilities in sustainable mine reclamation, stormwater management, and nonmetallic resource logistics. Contracting is often bundled with civil engineering and environmental remediation work, favoring firms with multidisciplinary teams and established federal compliance frameworks.

Small Business Size Standard

The SBA threshold that decides who can bid NAICS 213115 work as a small business.

$20.5M
Applies to the whole industry code

The SBA cap for this NAICS (13 CFR 121.201). A business at or under it can self-certify as small for work in this code, which is what makes it eligible for a small-business set-aside. The cap is set per NAICS, so the same company can be small in one code and not in another.

13 CFR 121.201, effective January 1, 2026. The SBA revises the table roughly once a year.

Top Contractors

Companies with the highest total award value under NAICS 213115, ranked by dollars won.

Ranked by total awards
CompanyTotal AwardsContracts
HEESONG GEOTEK CO., LTD.$109K3
HURST-ROSCHE, INC.$73K2

Top Agencies

Federal agencies directing the most contract spending toward NAICS 213115.

Department Of Defense5 awards$183K

Competition

How many companies historically bid on federal awards in NAICS 213115, from bidder counts reported on USAspending.

Usually Single-Bid

Half or more of reported awards drew exactly one bidder, usually a sign of incumbent-held work rather than an open field. · 523 reported awards

Median Bidders

1

Per reported award, all-time

Single-Bid Awards

61%

Share of reported awards with one bidder

10+ Bidder Awards

1%

Share of reported awards with 10+ bidders

Reported Awards

523

86% of 611 total awards

Bidder Count Distribution by Fiscal Year

Share of reported awards in each bidder-count bracket per federal fiscal year.

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
213115This Code
Support Activities for Nonmetallic Minerals (except Fuels) Mining
Usually Single-Bid161%
52386% of 611
21311NAICS Industry
Fewer Bidders239%
8,26280% of 10,310
2131Industry Group
Support Activities for Mining
Fewer Bidders239%
8,26280% of 10,310
213Subsector
Fewer Bidders239%
8,26280% of 10,310
21Sector
Mining, Quarrying, and Oil and Gas Extraction
Fewer Bidders236%
35,86687% of 41,386

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 Support Activities for Nonmetallic Minerals (except Fuels) Mining, by shared sector, subsector, and industry group.

Drilling Oil and Gas Wells

This U.S. industry comprises establishments primarily engaged in drilling oil and gas wells for othe...
213111Same Industry GroupHigh Similarity

Support Activities for Oil and Gas Operations

This U.S. industry comprises establishments primarily engaged in performing support activities, on a...
213112Same Industry GroupHigh Similarity

Support Activities for Coal Mining

This U.S. industry comprises establishments primarily engaged in providing support activities for co...
213113Same Industry GroupHigh Similarity

Support Activities for Metal Mining

This U.S. industry comprises establishments primarily engaged in providing support activities (excep...
213114Same Industry GroupHigh Similarity

Crude Petroleum Extraction

This industry comprises establishments primarily engaged in (1) the exploration, development, and/or...
211120Same SectorMedium Similarity

Natural Gas Extraction

This industry comprises establishments primarily engaged in (1) the exploration, development, and/or...
211130Same SectorMedium Similarity

Surface Coal Mining

This U.S. industry comprises establishments primarily engaged in one or more of the following: (1) s...
212114Same SectorMedium Similarity

Underground Coal Mining

This U.S. industry comprises establishments primarily engaged in one or more of the following: (1) u...
212115Same SectorMedium Similarity

Explore contracts across multiple NAICS codes Browse all NAICS Codes

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NAICS 213115 FAQ

Frequently Asked Questions

NAICS code 213115 covers Support Activities for Nonmetallic Minerals (except Fuels) Mining. This U.S. industry comprises establishments primarily engaged in providing support activities, on a contract or fee basis, for the mining and quarrying of nonmetallic minerals (except fuel) and for the extraction of nonmetallic minerals (except geophysical surveying and mapping, site preparation, construction, and transportation activities). Exploration for these minerals is included in this industry. Exploration services include traditional prospecting methods, such as taking core samples and making geological observations at prospective sites. Cross-References. Establishments primarily engaged in--

Recently Posted in Support Activities for Nonmetallic Minerals (except Fuels) Mining

NAICS: 213115
SLED
BGS Bedrock Coring Services
Solicitation # 6100066663
The Pennsylvania Department of Conservation and Natural Resources, Bureau of Geological Survey, is soliciting bids for an established price contract to provide drilling and rock coring services throughout the Commonwealth. These services are intended to support geotechnical investigations, groundwater resource investigations, and geologic mapping efforts. The selected vendor must be capable of mobilizing across Pennsylvania, operating in remote and off-road conditions, and conducting rock coring to depths of at least 800 feet below grade. Key technical requirements include the ability to collect NQ, HQ, and PQ core, perform overburden drilling with split spoon and shelby tube sampling, and execute borehole decommissioning and site restoration in accordance with PennDOT Publication 222. The contract will be awarded to the bidder offering the lowest total sum, provided they meet mandatory responsiveness requirements. The Department may verify qualifications by requesting references from at least three clients for whom the contractor performed similar work as a prime contractor within the last two years. Administratively, the contractor must establish separate billing accounts for each using agency, with payment terms generally set at 30 days after receipt of a proper invoice. Compliance with the Prevailing Wage Act, Davis-Bacon Act, and various state labor and safety laws is required. Bidders must submit their proposals through the SRM electronic system and include necessary certifications regarding lobbying and Iran Free Procurement.
Department of Conservation and Natural Resources

POSTED

9 days ago

DEADLINE

in 10 days
View Details
NAICS: 213115
SLED
IFB 10220866 Geological Exploration Drilling
Solicitation # 0000040496
The State of California has issued Invitation for Bid 10220866, solicitation number 0000040496, seeking professional geological exploration drilling services. The primary objective of this contract is to provide the Department of Water Resources with contractor assistance to explore groundwater resources within the Salton Sea watershed. These efforts are intended to support vegetation enhancement projects specifically designed for dust suppression areas. Interested vendors must submit their responses by October 21, 2026, at 4:00 PM. The project is associated with West Sacramento, California, and inquiries regarding the bid can be directed to Carley Porter. Potential participants may be required to register on the State of California's official website to be eligible for consideration.
State of California

POSTED

11 days ago

DEADLINE

in 11 days
View Details
NAICS: 213115
SLED
IFB 10220866 Geological Exploration Drilling
Solicitation # 10220866
The California Department of Water Resources issued Invitation for Bid 10220866 for as-needed geological exploration and well drilling services within the Salton Sea watershed in Southern California. The primary objective of this contract is to characterize water-bearing zones and water quality to support dust suppression and vegetation enhancement projects. The scope of work involves pilot hole drilling and the installation of monitoring and production wells at a minimum of two and a maximum of six drilling sites. The contract term is one year with two optional one-year extensions, and the final award was made to the lowest responsible bidder for 131,000 dollars. Eligible contractors must possess a valid C-57 Water Well Drilling License and adhere to OSHA and CalOSHA safety requirements. Key compliance mandates include a minimum 3 percent Disabled Veteran Business Enterprise participation commitment and registration with the Department of Industrial Relations for prevailing wage enforcement. The contractor is required to provide performance and payment bonds equal to 100 percent of the contract amount. Payment is processed monthly in arrears within 45 days of receiving an undisputed invoice, provided the DWR Contract Manager has issued written notice of satisfactory completion.
California Department of Water Resources

POSTED

12 days ago

DEADLINE

in 11 days
View Details
NAICS: 213115
Closed
SLED
Drilling & Blasting for Oconee County Rock Quarry
Solicitation # RFP 26-03
Oconee County in South Carolina is seeking proposals from qualified and experienced companies to provide comprehensive drilling and blasting services for the Oconee County Quarry. The selected contractor will be responsible for providing all necessary personnel, equipment, materials, and professional supervision to ensure operations are conducted safely and efficiently while adhering to all applicable laws and regulations. This solicitation, identified as RFP 26-03, was posted on September 10, 2026, with a response deadline of October 1, 2026. Interested parties can direct inquiries to the primary point of contact, Tronda C Popham, via email or phone.
Oconee County

POSTED

about 1 month ago

CLOSED

9 days ago
View Details
NAICS: 213115
Closed
Federal
HEAVY MINERAL SEPARATION SERVICES
Solicitation # 140G0226Q0162
Solicitation 140G0226Q0162 is a request for quotes from the Department of the Interior's U.S. Geological Survey for heavy mineral separation services to support in-situ U-Th-Pb geochronology and isotope tracer investigations. This small business set-aside under NAICS code 213115 is a firm-fixed-price contract with a performance period from October 1, 2026, to September 30, 2027. The selected contractor must provide all plant, equipment, labor, and materials to process rock and sediment samples into individual mineral separates based on size, density, and magnetic properties. Key technical requirements include the use of electro pulse disaggregation methods and the ability to handle both kilogram-sized samples and small drill-core materials. The contractor is required to record sample receipts within two business days and complete processing, reporting, and the return of all mineral separate splits and leftover materials within five weeks of receipt. All mineral separate splits must be clearly labeled with sample IDs and split properties. Award will be made to the lowest priced, technically acceptable offeror, with technical acceptability determined by a pass/fail evaluation of contractor qualifications and equipment specifications. Administrative requirements include electronic invoicing via the Invoice Processing Platform, adherence to Department of Labor Wage Determination 2015-5419 Revision 33 for Colorado, and compliance with DOI personnel security and credentialing processes. Proposals are due by September 18, 2026.
Ofc Of Acquisition Grants-Denver

POSTED

about 1 month ago

CLOSED

22 days ago
View Details
NAICS: 213115
SLED
Mine Site Reclamation ContractorThis subcontract for Mine Site Reclamation Contractor involves performing physical reclamation of mining expansion areas for prime contractors on Sacramento County projects. The scope of work includes regrading mined areas to stable contours, applying topsoil, and seeding for open space and dry grazing using excavators and bulldozers. The contractor is responsible for implementing erosion control measures in strict compliance with county standards and the approved Reclamation Plan. The final objective is the delivery of a reclaimed site that meets all specific open space and dry grazing requirements.
Sacramento County

POSTED

about 1 month ago

DEADLINE

N/A
View Details
NAICS: 213115
Closed
International
To drill core wells in the Lower Grand River watershed, southern Ontario
Solicitation # NRCan-5000094817
The Geological Survey of Canada, under Natural Resources Canada, is soliciting bids to conduct hydrogeological characterization through core drilling in the lower Grand River watershed in southern Ontario, covering approximately 2000 km². The project requires drilling up to seven boreholes—four initially with the option to add three more—depending on field results and budget, which will then be converted into environmental monitoring wells. Wells will be constructed either as a combination of PQ overburden and HQ bedrock cores or solely as HQ bedrock cores, with target depths of approximately 50 meters and potential extension to 65 meters for two wells if funding permits. Drilling must begin in the third week of September 2026 and be completed within 35 days or less, with all work conducted during daylight hours and not exceeding ten hours per day. Equipment must include track- or truck-mounted rigs in near-new condition, equipped with PQ and HQ core barrel systems capable of continuous coring at 1.5-meter intervals, meeting strict environmental standards to prevent effluent discharge into waterways or sensitive lands. The contractor must comply with all applicable legislation including the Occupational Health and Safety Act and Workplace Safety and Insurance Act, and demonstrate rigorous safety procedures in the field. All bids must satisfy mandatory technical pass/fail criteria including possession of a valid Well Contractor License, submission of names and credentials of a primary and alternate driller with Class 1 Well Technician Licenses, and proof of at least three overburden coring projects within the last eight years with ≥75 meter depth and ≥90% core recovery in at least one, along with demonstrated bedrock coring experience. Proposals must be submitted in four distinct sections—technical, financial, mandatory forms, and additional information—with full compliance to the Ineligibility and Suspension Policy and integrity verification requirements, including a List of Names and completed Declaration Form. Financial offers must be in Canadian funds, all-inclusive unit firm prices excluding taxes, submitted via Rate Bid forms, and evaluated based on the lowest compliant price. Invoicing must be emailed as a PDF to a specified government address and include detailed financial codes, contract numbers, and client references, with payment terms of 30 days upon receipt of a compliant invoice; non-resident contractors are subject to a 15% withholding tax unless a valid CRA waiver is provided. The contractor is responsible for mobilization and demobilization at no additional cost to Canada, must maintain accounting records in machine-readable format for seven years after final payment
Department of Natural Resources (NRCan)

POSTED

3 months ago

CLOSED

2 months ago
View Details
NAICS: 213115
Closed
SLED
ARFQ-0313-DEP2600000080-2 | AML Drilling - Southern Counties of West Virginia
Solicitation # ARFQ 0313 DEP2600000080
The contract ARFQ-0313-DEP2600000080-2 pertains to AML drilling activities in the southern counties of West Virginia and is issued by the West Virginia state agency. The solicitation was posted on April 28, 2026, with a response deadline of May 8, 2026, at 2:30 PM. It is a solicitation-type contract under the SLED (State, Local, Education, and Tribal) organization type with no specified set-aside or NAICS code. The work location is identified as within West Virginia, and the agency's official contact points include April D. O'Dell as the primary contact and an additional secondary contact from the state agency. Interested parties are directed to submit their responses before the deadline, with further information and submission resources available through the West Virginia procurement system's online portal. Communication can be made via email or phone, ensuring direct contact with the representatives assigned to this solicitation. The contract aims to engage qualified vendors for AML drilling services, contributing to the state's efforts in managing and addressing abandoned mine land concerns in the specified regions.
West Virginia

POSTED

6 months ago

CLOSED

5 months ago
View Details
NAICS: 213115
Closed
SLED
Drilling Services for Submerged Cave Systems in the Wakulla Basin
Solicitation # RFP 2026015
The Department of Environmental Protection of Florida is seeking qualified vendors to provide drilling services specifically for submerged cave systems located in the Wakulla Basin. This solicitation, issued under the reference number RFP 2026015, was posted on April 8, 2026, with a response deadline set for May 4, 2026. The solicitation targets vendors capable of specialized drilling work in environmentally sensitive underwater cave environments, pertinent to the NAICS code 20111500. Interested parties must adhere to the requirements and deadlines specified, including filing any protests according to Florida Statutes section 120.57(3), with failure to do so or to post required bonds resulting in waiver of related proceedings. The solicitation is managed by the Department of Environmental Protection’s office in Florida, with Wanda Norton serving as the primary point of contact for vendor inquiries via email or phone. There is no indication of a set-aside program for this contract. Vendors can access further details and submit their responses through the Florida vendor marketplace platform provided. The contract involves complex environmental drilling operations, demanding expertise in delicate submerged cave systems within the state's jurisdiction.
Department of Environmental Protection

POSTED

6 months ago

CLOSED

5 months ago
View Details
NAICS: 213115
Closed
SLED
DCR 990 Office of Water Resources Well Drilling
Solicitation # BD-26-1020-DCRCU-DCRCN-126608
DCRCU - DCR CONTRACTS UNIT

POSTED

7 months ago

CLOSED

6 months ago
View Details
NAICS: 213115
Closed
SLED
Difficult Coring Operations
Missouri

POSTED

9 months ago

CLOSED

9 months ago
View Details
NAICS: 213115
Closed
SLED
Standby and Overtime Drilling Operations
Missouri

POSTED

9 months ago

CLOSED

9 months ago
View Details

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