Mining Services
Solving Challenges Across the Mine Lifecycle
Every mine is built on a ground model, and every ground model carries uncertainty. Weak zones, water and changing stress conditions can turn a sound plan into downtime, rework or a safety event. We help mining clients reduce that uncertainty with integrated geotechnical, underground design, risk and construction expertise.
Challenges: What We Solve
Variable geology, weak ground and complex hydrogeology raise design and construction risk.
Difficult underground environments demand support systems that protect people and assets.
Every day of downtime costs. Designs need to be practical to build and quick to implement.
Shafts, drifts and portals must serve current operations and long-term value.
LJB Services
Services: What We Do
Mine Geotechnical Investigations
- Drilling programs
- Rock core logging
- Geology and hydrogeology
- Instrumentation and interpretive reporting that turn data into decisions
Underground Mapping and Characterization
- Geologic and structural mapping in drifts
- Raises, shafts and portals
- LiDAR and reality capture for as-builts and change detection
- Rock mass classification and ground models that support design and sequencing
Rock Mechanics and Ground Control
- Stability analysis
- Ground behavior and support evaluation
- Support concepts for bolts, mesh, shotcrete, steel sets and liners
- Rehabilitation strategies for deteriorated or changing ground
Shafts, Portals and Mine Infrastructure
- Site characterization
- Excavation approach and sequencing
- Temporary and permanent support
- Constructability reviews for access, temporary works and site constraints
Risk, Baseline and Construction Support
- Geotechnical baseline and data reports
- Independent review
- Risk registers and workshops
- Field engineering and claims avoidance
Legacy Mine Risk and Redevelopment
- Subsidence screening
- Mine stability assessment
- Interaction with surface development, reuse and mitigation concepts for owners, developers and public agencies
Your Partner Across the Mine Lifecycle
We help clients navigate mine challenges—from first drill hole to long-term rehabilitation.
Who We Serve
Mine Owners & Operators
Ground models, support design and
rehabilitation that protects people and production.
Mining Contractors
Fast Answers, constructible support designs
and field review that keep crews moving.
Engineering and EPCM Partners
Specialty Underground and geotechnical depth
that strengthens your team and fills capability gaps.
Developers and Public Agencies
Legacy mine screening and stability assessment
so sites can be reused safely.
Why LJB?
- Integrated expertise: With geotechnical, design, risk and construction support in one team, nothing gets lost in handoffs.
- Risk-based approach: We identify ground and construction risks early and manage them deliberately.
- Practical, constructible designs: Our real-world field experience turns complex conditions into workable plans.
- Long-term value: We plan and design durable underground infrastructure that supports safe, efficient operations for the life of the mine.
Featured Project: Grosvenor Mine Access Drifts
Moranbah, Queensland, Australia | Construction cost: $86 million
Two inclined mine access drifts (960 m transport drift and 830 m conveyor drift at 7 to 9 degrees) driven by earth pressure balance TBM. Our team designed the precast concrete segmental lining and refuge bays, assessed ground-structure interaction, evaluated load cases and reviewed constructability.
Meet Our Mining Services Leader
Sean Harvey, PG, CEG
Director of Mining Services
Sean Harvey, PG, CEG, leads LJB’s Mining Services Team, bringing more than 25 years of mining and underground experience, including geotechnical investigations, tunnel mapping, rock mechanics, GBRs, support design and construction observation. He managed NIOSH-funded research on support systems for dynamic loading in underground coal mines and holds an M.S. in Mining and Earth Systems from Colorado School of Mines.
Let's Talk About Your Ground
Whether you’re planning a new shaft, rehabilitating aging drifts or redeveloping a legacy site, our team is ready to help you move forward with confidence.
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