Specialized Mining Services

Jun 24, 2020

Ground Control
Back & Rib Bolting We can operate any equipment and install any support! Skilled ground control specialists can be mobilized quickly and can operate a variety bolters, drills, lifts and other heavy equipment to install any ground support mechanism.
High Wall Stabilization Highwall bolt-mesh Shotcrete Glue/grout injection
Square Sets, Arches & Tunnel Rings Custom designed and precisely fabricated to fit your specific needs, our talented and innovative engineers can work with you to create the perfect solution to your ground support challenges.
Cans & Steel Props Can Supports The can support is a yieldable secondary roof support made from a confined core of cementitious composite, encased in a cylindrical steel canister, which resembles a can. Quick Install Props Heavy duty, up to 60T capacity, these props can be carried easily and installed quickly by one person. Height range adjustability and alternative plates to suit surface conditions.
Steel Pumpable Cans Pumpable Can Supports feature a steel casing offering substantial initial strength, with greater strength than pumpable tower cribs, more than 2,500 tons. Used in high back applications up to 50 ft, these supports require assisted material handling in transport and setup.
Pumpable Cribs Long pumping distance, up to 15,000 ft. Can be pumped from the surface Efficient material handling Rapid installation Rapid strength gain provides quick support Yieldable support
Pumpable Tower Cribs Pumpable Tower Cribs are securely tethered together in a three-crib cluster to provide stability when pumping high areas. Used in applications from 16 to 50 ft in height Long pumping distance, up to 15,000 ft Can be pumped from the surface Efficient material handling Rapid installation Rapid strength gain provides quick support Yieldable support
Shotcrete Wet Shotcrete Applied wet from underground or surface Ability to work inby when spraying (minimal dust) Quick application Minimal material rebound Can be pumped up to 4,500 ft Can be pumped from the surface Applied manually or with Remote Oscillating Shotcrete Arm (ROSA) ROSA (Remote Oscillating Shotcrete Arm) is a versatile attachment that mounts on most hydraulic equipment to allow GMS miners to remotely apply shotcrete from a safe location using any dry or wet shotcrete pump. Dry Shotcrete Applied with low profile Baby Reed pump Sprayed dry requires less water GPM Quick and easy mobilization Applied manually or with Remote Oscillating Shotcrete Arm (ROSA)
Glue Injection For Mining, Construction and Environmental applications. Roof Consolidation Water Stoppage Rock Stabilization Ring Grouting Void Filling
Cementitious Grouting For Mining, Construction and Environmental applications. Water Stoppage Ground Consolidation
Surface Grouting Down-hole Grouting: Insert 2-part packer down into borehole followed by an Injection of 2-part grout Can stop even substantial water ingress High volume application
Void Filling & Back Filling Pumped from surface or underground Expands 30X original volume Strong adhesion properties to surrounding strata
Ventilation
Overcasts/Undercasts High Pressure Overcasts Overcast panels are engineered to customer specifications Panels are dialed into the mine roof, rib, and floor Panels are sprayed with shotcrete on both sides Can withstand up to 20 in. wg Low Pressure Overcasts Overcast panels are engineered to customer specifications Modular, mobile and reusable Available with a variety of options, such as doors, ramps, steps, etc.
Seals 120 psi 120 PSI MSHA Approved Mine Seals GMS has fully trained and highly experienced installers that have been constructing 120 PSI seals since the development of the latest regulations. We can pump underground or from the surface, utilizing a fleet of both crib and seal pump systems.
Stoppings/Curtain Walls Sprayed Shotcrete high-pressure stoppings can withstand 22 in. wg
Thin Spray Liners Elastic polymer-based thin spray-on liner (TSL) for surface reinforcement and weathering protection of soil, rock and coal strata Water- and air-tight For preventive measures on ventilation and seals Protects from atmosphere deterioration Product expands and flexes with roof or rib changes Unique waterproof membranes Prevents weathering in newly mined entries Sprayed on white for a brighter reflection Approved for ventilation controls Fireproof and can be used in charging stations One-component polymer powder, applied with baby reed pump Dry spray application, mixed with water in the spraying nozzle Sets within 5-10 minutes; generates tensile strength over the next hours, days, months Good bond and high elasticity Application thickness of 2-10 mm, average 4 mm No toxic components and virtually dust free, enhancing mine health and safety Fast Can be applied at one square foot per second Rapid set-up; allows stop and start at any time Only needs compressed air Safe Improves visibility in mine due to white color Neither methane nor radon can pass through it Improves ventilation by creating smooth surface to the strata Impermeable Maintenance Easily washed and readily accepts rock dust Will stop the symptoms of weathering and prevent small rocks from falling Will not corrode. Forty-year life expectancy Not affected by Mine Acid Water Cost Effective No rebound or waste of material Takes less man power and cost to spray five times more than gunite or shotcrete One pallet of TSL can replace 14 pallets of shotcrete or gunite to do same area Requires a small, low cost machine that is permissible to use anywhere in the mine (Baby Reed SOVA, Allentown, Blastcrete Picolla or equivalent)
Refuge Shelters MSHA Approved Refuge Chambers Breathable air can be provided from: Borehole from the surface Compressed air from the mine filtration system Oxygen cylinders 15 PSI Stopping with thin spray-on liner sprayed on roof and rib Storage for communication devices Water and food Fire extinguisher Gas detectors
Man Doors & Specialty Mine Doors Man doors and large-scale, specialty equipment doors, custom designed, professionally and efficiently installed.
Belt Terminal Services Drive Installations Take-Up Units Head Frames Chute Work/Replacement Conveyor Structure Installation Tunnel Reclaims
Concrete GMS Concrete Services can design, form and pour foundations or structures, underground or above! GMS can pump concrete from the surface to underground 5,500- 6,000 feet. While pumping from underground, we can pump from 800-1,000 feet away. Underground projects typically include: Bunkers Sumps Training, Maintenance, Break Rooms Diesel Stations Slopes Cellular Concrete Void Fills
Slope/Drift Excavation
Shaft Excavation & Rehabilitation Raise Bore Shaft Excavation Shaft Liners Shaft Grouting Guide Rail Replacement Shaft Rehabilitation
Blasting Blasting Crews Certified Shot Firers ATF Permited Blasting Cappabilities Overcasts Undercasts Sumps Manholes Belt Trenches Bunkers Slopes Any problem rock Production Shaft Excavation ATF licensed and equipped to handle blasting needs at any operation.
Longwall Services GMS crews specialize in specific skill sets directly related to Longwall recovery and installation services. Current GMS Longwall core group has an average of 4.5 years of continuous longwall install and recovery experience with an average of 6 to 9 longwall moves per year, in various coal mines with varied geological conditions and recovery methods. This experience allows GMS crews to minimize exposure to workplace hazards, and develop cost-saving efficiencies in longwall relocations. Longwall Moves Longwall Maintenance Turnkey Longwall Moves Longwall Setup an Recovery Crews Outby Utililty Crews Glue Injection Crews Pumpable Crib Crews Consultancy Services Shield Technicians Maintenance Services Pre-Driven Extraction Faces Mule Operators Certified Foremen Rental Equipment
Surface Construction Gen. Contracting/Project Mgmt. Concrete Industrial Construction Masonary Utilities Pipeline Excavation Industrial Maintenance