What JENNMAR Services does

JENNMAR Services is a privately-held industrial staffing and specialty services company headquartered in Canonsburg, Pennsylvania, operating across 23+ U.S. states through 12 branch offices and employing between 1,001 and 5,000 people. Founded in 1972, the company supplies skilled, drug-free contract labor on both temporary and permanent placement terms to four primary verticals: coal mining (underground and surface), oil & gas (with a focus on the Marcellus and Utica shale basins), construction, and industrial plant operations including power plants and coal preparation plants. Its vertical segmentation is reinforced by MSHA, OSHA, and SAFELAND training programs delivered through a certified training infrastructure.

The company's service portfolio extends well beyond staffing into integrated industrial services. Core service lines include mining services (ground control, blasting, longwall setup and recovery, concrete), construction services (HDPE pipe installation, pipeline, welding, plant maintenance, millwright work, field fabrication), heavy equipment machine repair (engine rebuilding, transmission and differential repair, turbocharger rebuilds, mobile line boring, and an exclusive Deutz engine dealer territory in West Virginia), 24/7 Hot Shot trucking under DOT/PUC/MC compliance, excavation and reclamation, industrial maintenance, and water operations. The Jennmar Maintenance and Repair affiliate provides field and shop repair coverage for major OEM brands including Caterpillar, Cummins, Detroit Diesel, John Deere, Volvo, International, JLG, and Terex. The company is part of the broader Jennmar family, and in October 2022 it acquired Five Star Roll Form to extend its roll-formed product capabilities.

Revenue is generated through professional services contracts, with pricing structured on a quote-based, project-by-project basis rather than disclosed tiers. The go-to-market is sales-led and direct: a small named sales team (General Manager Kevin Clarke, Sr. Operations Manager Jim Stajnrajh, Operations Manager Brandon Wilmoth) engages enterprise customers by phone and email, supported by regional field offices. Marketing relies on the company website, Facebook, LinkedIn, and Indeed for recruitment rather than paid advertising. Customer logos are not publicly disclosed, leaving customer concentration unverified, while the diversified vertical mix and multiple service lines suggest a distributed revenue base that nonetheless remains exposed to coal and oil & gas cyclicality.

Name

JENNMAR Services

Legal name

Jennmar Services

Website

https://jennmarservices.com

Company type

Private

Founded year

1972

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

JENNMAR Services is a Pennsylvania-based industrial staffing and specialty services firm that supplies skilled contract labor, mining and construction services, heavy equipment repair, MSHA/OSHA training, and trucking to coal mining, oil & gas, construction, and industrial plant customers across 23+ U.S. states via 12 branch offices.

Ownership category

akta.pro rank

Product category

Industrial Staffing Services

NAICS

Temporary Help Services (561320), Mining Machinery and Equipment Manufacturing (333131)

SIC

Services-Employment Agencies (7361), Services-Help Supply Services (7363), Mining Machinery & Equip (No Oil & Gas Field Mach & Equip) (3532)

akta.pro primary industry

Mining & Heavy Equipment Operator Staffing (BPACAEAI)

akta.pro secondary industries

Iron Ore Mining Support Services (Drilling, Blasting, Contract Mining, Maintenance) (IMAKAAAJ), Skilled Trades (Electricians/Plumbers/HVAC/Carpenters) Staffing (BPACAEAB), Security, Safety & Fire/Life Safety Management (BPABAAAE)

Keywords

• Industrial staffing
• Contract labor
• Mining services
• Construction services
• Heavy equipment repair

Headquarters

HQ city

Pennsylvania Furnace

HQ country

United States

HQ region

North America

Offices13 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Technology or R&D, Marketing or Sales, Others

Revenue model

1. Contract Labor Services: Providing skilled, drug-free contract labor to businesses across coal mining, oil & gas, construction, and industrial plant operations. Revenue generated through staffing fees and labor contract arrangements.
2. Heavy Equipment Repair Services: Repair and rebuild services for heavy equipment components including engines, transmissions, differentials, and turbochargers. Services both field and shop-based repairs.
3. Mining Services: Specialized mining services including ground control, blasting, concrete, longwall services, and maintenance services for underground and surface mining operations.
4. Construction and Industrial Services: Services including plant maintenance, trucking, excavation, reclamation, facility management, water transfer, fabrication/welding, steel erection, and concrete services.
5. Training Services: MSHA training, underground coal mining refresher courses, SAFELAND training, and OSHA training programs for employees and employers.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

JENNMAR Services provides skilled, drug-free contract labor and permanent placement staffing to coal mining, oil & gas, construction, and industrial plant operators across 23+ U.S. states. The company also delivers complementary industrial services including mining services (ground control, blasting, longwall), construction services (pipeline, welding, plant maintenance), heavy equipment machine repair (engine rebuilding, Deutz dealer), 24/7 hot shot trucking, excavation, water operations, and MSHA/OSHA safety training.

Product overview

JENNMAR Services operates as a unified service platform offering specialized staffing, recruitment, and contract labor solutions across multiple industries. The portfolio consists of core service lines including Contract Labor Services (permanent placement and temporary staffing), Mining Services (ground control, blasting, longwall services), Construction Services (pipeline, welding, plant maintenance), Heavy Equipment Machine Repair (engine rebuilding, field services, Deutz dealer), Training Services (MSHA, OSHA, SAFELAND), Trucking Services (24/7 Hot Shot), Excavation Services, Industrial Maintenance, and Water Operations. These services are designed to work together as an integrated workforce solution, enabling customers to access skilled labor and specialized services from site preparation through project completion.

Differentiator

Problem solved

Functional benefit

Products and services

• Contract Labor Services Provides skilled, drug-free contract labor for coal mining, oil & gas, construction, and industrial plant operations, serving both underground and surface projects. Offers both permanent placement and temporary staffing solutions.
• Construction Services Delivers construction solutions including HDPE pipe installation, pipeline work, road repairs, welding services, plant maintenance, field/shop fabrication, millwright work, painting, pad reduction, retaining walls, and new construction.
• Mining Services Provides specialized mining services including ground control (back and rib bolting, high wall stabilization, shotcrete, steel pumpable cans), blasting, longwall services, concrete, maintenance services, and certified foremen for underground and surface mining operations.
• Heavy Equipment Machine Repair Affiliate service offering heavy equipment repair and maintenance including engine rebuilding, transmission repair, differential repairs, torque converter replacement, mobile line boring and bore welding, and field repair services for Caterpillar, Cummins, Detroit Diesel, John Deere, JLG, Terex, Volvo, and International brands.
• Turbocharger Repairs and Rebuilds Provides turbocharger repair and rebuild services for all OEM applications, including minor and major repair kits, cartridges, and installation kits using parts from the United States or the UK.
• Coated Exhaust Components Provides high temperature insulated turbochargers, manifolds and other coated exhaust components for marine, mining, and defense industries.
• Deutz Engine Parts and Repair Exclusive Deutz dealer for West Virginia, serving Marcellus Shale regions of Pennsylvania, Ohio, and New York. Offers service and parts for Deutz engines including complete engine rebuilds and replacements.
• Oil and Gas Field Services Provides on-site oil and gas field services including routine and preventative maintenance, rig support, diesel breakdown repairs, hydraulic system support, equipment rentals, and mobile welding. Services Marcellus and Utica shale regions.
• Training Services Provides workforce training including MSHA training, Underground Coal Mining Refresher Courses, SAFELAND training, and OSHA training. Offers both on-site and classroom training with certified trainers available in 23+ states.
• Trucking Services Offers 24/7 Hot Shot trucking services including tractor trailers, lowboy equipment, winch trucks, heavy haul, flat bed, and oversized hauling. Operates under PUC, DOT, and MC compliance.
• Excavation Services Provides site preparation, excavation, reclamation, E and S controls, slip repair, hydroseeding, impoundment work, row mowing, silt fence installation, and straw blowing.
• Industrial Maintenance Provides industrial plant maintenance for hard rock, power plants, oil and gas facilities, and coal preparation plants. Includes specialty shop services, fabrication, sandblasting, painting, water operations, and industrial plant cleaning.
• Water Operations Delivers water operation needs from facility operations and water transfers to manifold attendants and consultants.
• Staffing Services Provides well-trained, drug-free, and experienced staff to supplement existing workforces during peak periods or act as a screening service for companies to evaluate potential employees before permanent hiring.

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Scale indicators3 records

Recent moves5 records

Expansion highlights6 records

Direct peers

• PeopleReady (TrueBlue): PeopleReady specializes in temporary and on-demand industrial staffing for construction, manufacturing, and resource customers. Comparable as a high-volume industrial labor provider with similar end-markets and just-in-time staffing model.
• Aerotek: Aerotek's industrial and construction staffing divisions supply contract labor for manufacturing, logistics, and construction customers nationwide. Highly comparable as a mid-to-large blue-collar staffing provider with deep multi-state branch coverage.
• Tradesmen International: One of the largest skilled construction and industrial trades staffing firms in North America, deploying craft workers (welders, pipefitters, carpenters, heavy equipment operators) to contractors and industrial clients. Directly comparable as a blue-collar/skilled trades staffing specialist with diversified industrial end markets.
• Becker Mining Systems: Global supplier of mining communication, power, and ground control equipment, with significant coal mining exposure. Comparable as a multi-product provider to underground mining operators in the same MSHA-governed environment Jennmar Services serves.
• Cleveland Brothers: The Cat heavy equipment dealer for Pennsylvania and surrounding states, providing sales, rentals, parts, and field service. Closely comparable to Jennmar's heavy equipment repair / Deutz dealer business in industrial machinery aftermarket.
• Hayes Personnel Corp: Mid-sized industrial and skilled trades staffing firm serving industrial, construction, and manufacturing clients. Comparable as a regional-to-national blue-collar contract labor provider with overlapping customer profiles.
• Frontier-Kemper Constructors: A specialty mining and underground construction contractor delivering shaft sinking, heavy civil, and underground mining services. Comparable as a provider of ground control, blasting, and underground mining execution services to coal and hard-rock miners.

Broad incumbents

• Komatsu Mining: Major OEM of mining and heavy construction equipment with services and aftermarket support for coal and hard-rock operators. Comparable as a broad incumbent on the equipment side of the same end-customer ecosystem.
• ManpowerGroup (Industrial Division): One of the world's largest staffing firms with a dedicated Industrial segment serving manufacturing, logistics, and mining customers. Comparable as a broad incumbent with strong industrial exposure, though not mining-specific.

Others

• Five Star Roll Form: Recently acquired subsidiary of Jennmar Services producing roll-formed metal products for the mining and construction industries. Included as an internal comparison for adjacent mining supply exposure.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/JennmarServices
• LinkedInlinkedin.com/company/jennmar-services

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A1 record

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about JENNMAR Services