Miller Contracting
Miller Contracting is a privately held turn-key mining and civil contractor providing engineering, design, manufacturing, and construction of mine portals, shafts, ventilation, hoisting systems, and foundations for U.S. coal, limestone, and mineral mining operators.
- Company typePrivate
- Founded2007
- HeadquartersCarrier Mills, United States
- Headcount101–250
- GTM typeB2B
- OfferingServices
What Miller Contracting does
Miller Contracting Services, LLC is a privately held, turn-key mining and civil contracting company headquartered in Carrier Mills, Illinois. Founded in 2001, the firm began with residential and light commercial work in the Illinois Coal Basin and evolved into a full-scope mining infrastructure contractor serving coal, limestone, and mineral mining operators across the Midwest, Southeast, Appalachian, and Western United States. It operates with 101-250 employees and reports over 3,000,000 lifetime hours worked with a 0.66 Total Recordable Incident Rate versus a 2.09 industry average.
The company's core offering is single-source project delivery covering engineering, design, manufacturing, and construction of mine access and support infrastructure. Its service portfolio includes mine portals, declines, ventilation systems, mine shafts (conventional drill-and-blast, raisebore, and inner seam/bunker construction), reinforced concrete foundations, surface buildings (bathhouses, warehouses, administrative facilities), and hoisting systems delivered through its OJI Industries division. Miller owns three fully equipped shaft sinking systems, raisebore equipment, and concrete batch plants, and operates in-house fabrication for hoists, cages, skips, headframes, and loading stations under the OJI sub-brand. Roxsyle Systems serves as an integration partner for hoisting control systems. Engineering workflows rely on 3D modeling and structural analysis for ventilation shaft and fan foundation design.
Revenue is generated through project-based turn-key contracts (engineering, fabrication, construction, commissioning), hardware sales from in-house manufactured hoisting system components, and ongoing post-construction maintenance, inspection, repair, and upgrade services. Pricing is quote-based and project-specific with no public disclosure. The go-to-market motion is direct enterprise sales targeting mining company decision-makers, supported by an industry reputation anchored in MSHA compliance and a stated 80% repeat customer rate. The company is privately held with no disclosed external investors, parent company, or funding history.
Miller Contracting firmographics
Firmographics- Name
- Miller Contracting
- Legal name
- Miller Contracting Services, LLC
- Website
- https://millercontracting.us/
- Company type
- Private
- Founded year
- 2007
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Short description
- Miller Contracting is a privately held turn-key mining and civil contractor providing engineering, design, manufacturing, and construction of mine portals, shafts, ventilation, hoisting systems, and foundations for U.S. coal, limestone, and mineral mining operators.
- Ownership category
- akta.pro rank
Miller Contracting industry classification
Industry- Product category
- Mining Infrastructure Contracting
- NAICS
- Support Activities for Metal Mining (213114), Mining Machinery and Equipment Manufacturing (333131), Other Specialty Trade Contractors (2389)
- SIC
- Heavy Construction Other Than Bldg Const - Contractors (1600), Construction - Special Trade Contractors (1700), Mining Machinery & Equip (No Oil & Gas Field Mach & Equip) (3532)
- akta.pro primary industry
- Mine Construction & Development Contracting (Shaft Sinking, Tunneling, Pre-Strip, Civil Works) (IMAKAKAG)
- akta.pro secondary industries
- Mine Operations Contracting (Open-Pit & Underground Development, Production, Load/Haul) (IMAKAKAD), Mine Maintenance & Asset Reliability Contracting (Mobile/Fixed Plant Maintenance, Shutdowns, Overhauls) (IMAKAKAF)
Keywords
Where Miller Contracting is headquartered
LocationHeadquarters
- HQ city
- Carrier Mills
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Miller Contracting business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Supply Chain, Infrastructure, Marketing or Sales, Technology or R&D
Revenue model
- Mine Construction Services: Project-based revenue from turn-key mining infrastructure construction including portals, declines, shafts, hoisting systems, ventilation systems, and concrete foundations. Revenue is generated through single contracts covering engineering, fabrication, construction, and commissioning.
- Manufacturing and Fabrication: In-house manufacturing of hoisting system components (skips, cages, headframes, sheaves, loading stations) and custom-engineered solutions for the mining industry.
- Post-Construction Support: Ongoing maintenance, inspection, repair, and upgrade services for infrastructure built by Miller, providing recurring service revenue throughout the lifecycle of mining infrastructure.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels3 records
Miller Contracting product offering
Product offeringCore offering
Miller Contracting is a turn-key mining and civil contracting company that delivers complete underground mining infrastructure for enterprise mining clients. Services span engineering, design, manufacturing, and construction of mine portals, declines, ventilation systems, foundations, surface buildings, shafts (conventional drill-and-blast, raisebore, inner seam/bunker), and integrated hoisting systems produced by its OJI Industries division. Projects are executed under single-source contracts covering all phases from initial design through commissioning and post-construction support.
Product overview
Miller Contracting is a turn-key mining and civil contracting company that provides fully integrated infrastructure solutions for underground mining operations. The company's portfolio consists of multiple core services: Mine Portals (engineered underground access points), Mine Declines (angled ramps for equipment access), Mine Ventilation Systems (air quality and worker safety infrastructure), Foundations (reinforced concrete for heavy mining equipment), Buildings (bathhouses, warehouses, administrative facilities), Hoisting Systems through its OJI Industries division (vertical transport equipment including skips, cages, and control systems), and Mine Shafts (vertical access including conventional drill-and-blast, raisebore, and inner seam/bunker construction). All services are delivered under a single-source, turn-key model combining engineering, design, manufacturing, and field execution in-house, eliminating subcontractor coordination and providing clients with a single point of accountability from project start to commissioning.
Differentiator
Problem solved
Functional benefit
Brands
- OJI Industries (OJI): A division of Miller Contracting specializing in delivering safe and efficient hoisting systems for underground mining and civil projects. OJI handles the full scope of hoisting systems in-house, from engineering and detailing to fabrication and installation, including hoists, cages, skips, headframes, and loading stations.
Products and services
- Mine Portals Engineered mine portal construction providing reliable underground access to support faster production. Includes shaft sinking, decline excavation, mechanical and electrical systems, ventilation fans, hoisting, bathhouses, warehouses, and surface infrastructures for mining operations.
- Mine Declines Custom-engineered mine declines providing safe, efficient underground access tailored to site-specific conditions. Angled ramp access enables direct drive access for personnel and heavy equipment into mining operations.
- Mine Ventilation Systems Designed, fabricated, and installed mine ventilation systems supporting continuous mining operations. Includes shaft construction, fan foundations, mechanical and electrical installation, and compliance with MSHA standards.
- Foundations Reinforced concrete foundation solutions supporting heavy loads, harsh conditions, and structural demands of mining infrastructure. Includes pile foundations, caissons, plate press foundations, structural foundations, and specialized services for reclaim tunnels, casting pits, stacking tubes, and train dumps.
- Buildings Functional building infrastructure for mining operations including bathhouses, support structures, warehouses, and administrative buildings designed with long-term structural integrity, with concrete work handled in-house.
- Hoisting Systems (OJI Industries) End-to-end hoisting systems and components for safe, efficient vertical transport in underground mining operations. The OJI Industries division provides service, production, emergency escape, and slope hoisting solutions along with skips, cages, loading stations, sheaves, control systems, and conveyance equipment.
- Mine Shafts Vertical mine shaft construction providing safe access, material handling, and ventilation between surface and underground levels. Services include mine shaft sinking, conventional shafts, raisebore shafts, and inner seams and bunkers.
- Turn-Key Mining Infrastructure Services Single-source service model delivering complete mining infrastructure that combines engineering, design, manufacturing, and construction managed from start to finish under one contract, eliminating multi-contractor coordination and providing a single point of accountability.
Quantifiable outcome
- 99.9% on-time completion rate
- +4 more outcomes
Companies that use Miller Contracting
Customer profileNamed customers7 records
Segments1 record
Ideal customer profiles1 record
Miller Contracting technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration1 record
Feature4 records
Miller Contracting partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- Roxsyle SystemssupportingRoxsyle Systems is partnered with OJI Industries (Miller Contracting's hoisting systems division) to deliver advanced control systems for hoisting equipment. Roxsyle Systems is described as a leader in the field, providing intelligent control systems that ensure smooth and efficient operation of hoisting systems.
Scale indicators10 records
Recent moves5 records
Expansion highlights5 records
Miller Contracting competitors and assessment
Company assessmentDirect peers
- Thyssen Mining: Specializes in shaft sinking, mine development, and underground construction services for mining clients globally, competing head-to-head with Miller in conventional and raisebore shaft construction.
- Cementation (Murray & Roberts): Provides shaft sinking, underground mine construction, and raise mining services globally, with comparable turn-key underground infrastructure delivery and hoisting expertise.
- DMC Mining Services: North American shaft sinking, raise boring, and underground mine construction contractor with overlapping service portfolio in ventilation shafts and mine access infrastructure.
- Shaft Drillers International: U.S.-based raisebore and shaft construction specialist focused on ventilation and access shafts, directly comparable to Miller's raisebore and conventional shaft divisions.
- Harrison Western Construction Corporation: U.S. underground mine construction and shaft sinking contractor serving coal and metal mines, with comparable capabilities in portals, declines, and ventilation infrastructure.
- Frontier-Kemper Construction: Heavy civil and underground contractor providing shaft sinking, tunneling, and mine infrastructure services across North America, competing on similar mine-access project scopes.
- J.S. Redpath Corporation: One of the largest mine construction and shaft sinking contractors in North America, providing underground mine development, shaft sinking, and raisebore services directly comparable to Miller's core offering.
Broad incumbents
- Boart Longyear: Global mining services and drilling contractor with overlapping shaft sinking and exploration drilling capabilities; comparable as a large incumbent offering adjacent underground services.
- MacLean Engineering: Broader mining equipment manufacturer and service provider serving underground mines globally; comparable as an equipment-and-services incumbent adjacent to Miller's OJI Industries hoisting equipment business.
Regional players
- Haynes Mining & Construction: Appalachian-region mining contractor providing site preparation, construction, and reclamation services to coal operators; comparable in regional customer base and mine-site civil contracting scope.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights6 records
Customer concentration
Miller Contracting social profiles
Digital presenceMiller Contracting financial estimates
Financial estimateRevenue estimate
Valuation estimate
Miller Contracting leadership team
Management profileNumber of profiles
Miller Contracting subsidiaries and ownership
Company hierarchySubsidiaries1 record
Miller Contracting funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Miller Contracting M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Miller Contracting
What does Miller Contracting do?
Miller Contracting is a turn-key mining and civil contracting company that delivers complete underground mining infrastructure for enterprise mining clients. Services span engineering, design, manufacturing, and construction of mine portals, declines, ventilation systems, foundations, surface buildings, shafts (conventional drill-and-blast, raisebore, inner seam/bunker), and integrated hoisting systems produced by its OJI Industries division. Projects are executed under single-source contracts covering all phases from initial design through commissioning and post-construction support.
Is Miller Contracting a public or private company?
Miller Contracting is a private company. It is classified as unknown and is currently operating.
When was Miller Contracting founded?
Miller Contracting was founded in 2007. It employs 101 to 250 people.
Where is Miller Contracting based?
Miller Contracting is headquartered in Carrier Mills, United States, in the North America region.
How does Miller Contracting make money?
Three revenue lines are on record. Mine Construction Services are the primary driver. The others are manufacturing and Fabrication and post-Construction Support.
Who are Miller Contracting's main competitors?
Direct peers on record are Thyssen Mining, Cementation (Murray & Roberts), DMC Mining Services, Shaft Drillers International, Harrison Western Construction Corporation, Frontier-Kemper Construction and J.S. Redpath Corporation. Broad incumbents are Boart Longyear and MacLean Engineering. Haynes Mining & Construction is listed as a regional player.
Does Miller Contracting have an API?
No public API is recorded for Miller Contracting.
What industry is Miller Contracting in?
Miller Contracting's product category is Mining Infrastructure Contracting. Its primary akta.pro industry code is IMAKAKAG, Mine Construction & Development Contracting (Shaft Sinking, Tunneling, Pre-Strip, Civil Works), with a secondary code of IMAKAKAD, Mine Operations Contracting (Open-Pit & Underground Development, Production, Load/Haul). Its NAICS code is 213114 and its SIC code is 1600.