Product Catalog

Our mining bits are crafted from premium U.S. steel and brazed with high-quality carbide tips, ensuring superior wear resistance and impact strength. Designed for versatility, they deliver optimal performance across various mining applications, from auger mining to drilling systems.

Our premium carbide mining tips are engineered to withstand the toughest conditions, providing superior durability and precision for all your mining operations

1-Day J-SEAL differs from traditional J-SEAL as the non-foamed formulation provides for extended pumping distances along with the quick strength gain required for an approved seal in less than 24 hours.

PUR70 is pumped (bottom-up) into Fully-Grouted Cable Bolts (FGCB) to provide corrosion protection and improve bolt life. J-SEAL is a high-strength foaming grout used primarily for rated seals.

J-Block products are composed of non-toxic incombustible materials whose air permeability and relative fire resistance characteristics are unequaled.

The J-CAN is a secondary standing support product with options in diameter and height.

JENNCHEM's J-Firm Soil Stabilization Grout is a free-flowing, low viscosity, sodium silicate grout, and hardener that fully encapsulates and hardens the loose soil in order to allow for safe excavation.

The J-LOK resin in the cartridge is used to anchor bolts to the surrounding strata. This unification of the resin, bolt, and strata layers provides the necessary strength and rigidity to prevent sag by acting as a reinforcement that anchors the individual stratified layers of rock into a single high strength beam.

J-PLUG Acrylate Grout is a fast-reacting, low viscosity, acrylate polymer that is used to seal water leaks in concrete structures and stabilize soils.

J-SEAL is a specialized foaming cement that is used to build permanent coal mine ventilation seals. The rapid strength gain provides immediate ground support to the surrounding strata with quicker cure times to meet seal approval specifications in days rather than weeks.

Jennchem's Latex Trowel is a premixed latex-based mine sealant that has multiple underground applications. It can be used to seal and maintain newly constructed stoppings and seals.

Jennchem's Latex Spray is a premixed latex-based sprayable mine sealant specifically designed with higher flexibility and moisture sealant for applications in the underground mining industry.

Jennchem's TC Spray is the original premixed sprayable mine sealant and comes ready to use straight from the pail. It has a variety of applications in the industry providing ventilation control, fire-proofing, and strength enhancement to meet MSHA standards.

Jennchem's TNT Trowel Pro is a cost-effective, premixed silicate-based fire retardant mine sealant designed to be used on newly constructed stoppings and overcasts, for ventilation control maintenance, and as fire-retardant material used to coat all accessible surfaces of wood.

JENNCHEM Underground Roadway Repair is a specially formulated fast-setting concrete designed for the mining and tunneling industries.

The JM CABLE Fully Grouted Cable Bolt is proven to be very versatile roof support due to its ability to control many different ground conditions, from increasing the lifespan of standard cable bolt supports in long-term main entry systems to stopping the ingress of water.

JSC Grout is JENNCHEM's series of single-component hydrophobic polyurethane grouts that are used for sealing leaking cracks or joints in a variety of applications.

Once cured, the Pourable Resin Grout forms an effective corrosion barrier from a pH of 2 through a pH of 11.

PUR70 Polyurethane Resin is a two-component polyurethane resin system. When properly mixed at a ratio of one to one, PUR70 cures to a rigid polymer with unique physical properties, resistance to water and chemical attack, and long-term durability.

Ultra-LOK is a superior two-component urea silicate grout optimized for strength and providing industry leading advancement times.

Ultra-X Foam is a two-component grout that comprises an organomineral activator and modified polyisocyanate intended for strata consolidation, coal face reinforcement, and large or small cavity filling.

US Grout is a two-component grout that comprises a silicate and a modified polyisocyanate intended for strata consolidation, coal face reinforcement, and water control.

Belt Hanger for Steel Sets, Utility Hangers, Belt Hangers, J-16, J-9, Rabbit Ear, and Angle

Complete Assembly includes Top Troughing Idler (2), Side Rail (2), Floor Stand, and Return Roller.

JENNMAR manufactures J-Walk crossover systems. These reusable crossover structures are designed and built with ladders and handrails for extra safety when traveling over conveyor belts.

Jennmar's conventional bolts consist of a shell anchor headed smooth bar with a consistent threaded end. A bearing plate is also used to provide increased strata control. Jennmar offers several types of shell anchorage systems. Our bail anchors have full shell-length contact and work well in weak strata conditions.

J-Channel Beams, Wide Flange Beams & Heat Treated Serrated Steel Beams (Waffle)

Belt Hanger for Steel Sets, Utility Hangers, Belt Hangers, J-16, J-9, Rabbit Ear, and Angle

JENNMAR Bolt Head Markings, Recommended BOLT Torque, and Cable and Threaded Bolts Color Codes

JENNMAR offers a complete line of cable support products. These products are based on a 7-strand, high-strength cable. JENNMAR offers an industry-leading line of cable products including non-tensioned cables, post-tensioned cables, tensionable cables for primary roof support, and fully-grouted cables.

With our heavy-duty coiling machine, JENNMAR can produce coil reels to fit mechanized cable bolting machines which increase productivity due to concurrent drilling and cable installation.

The CABLE-LOK Shell is a spring-loaded shell that can be automatically set on installation.

For Installation of Bearing Plates

The channel sections are specifically designed for use with structural members and ease of installation. The sections and materials used is design for efficient installation and transportation to the tunnel location.

T-Channels, Roof/ Rib Safety Channels, Roof and Mini Monster Mats

All systems are configured with high strength bar: - (Grade 55 (55,000 psi minimum yield) - (Grade 75 (75,000 psi minimum yield)

JENNMAR offers a cuttable high strength molded fiberglass rib pan and plates for environments requiring corrosion resistance.

The D-Tech Bolt 20 mm is designed for highly seismic and converging geotechnical domains.

The D-Tech Bolt 23 mm is designed for highly seismic and converging geotechnical domains.

The Fast Anchor 3 is a double corrosion-resistant steel bolt for strata control that provides quick assembly and secure installation due to its expansion shell that provides immediate anchorage and generates superior grip upon application.

The JENNMAR FRICTION-LOK Stabilizer System is a strata control system designed to firmly control hard or soft rock. As lateral ground movement increases, the system increases its superior holding power.

JENNMAR is capable of providing powder-coated, epoxy-coated, and hot-dipped galvanized products.

Forged Head Rebar and J-BAR

Reliable self-drilling installation with single-pass drilling and grouting installation.

Various steel sets that are protected with JENNMAR's IRL panels have been approved by MSHA and installed in several underground roof fall rehabilitation projects.

The Fully-Grouted INSTAL Bolt is the ideal high tension bolt due to the resin that locks bolt tension within the system, while significantly slowing down the weathering process around the bolt hole.

The J-LOK resin in the cartridge is used to anchor bolts to the surrounding strata. This unification of the resin, bolt, and strata layers provides the necessary strength and rigidity to prevent sag by acting as a reinforcement that anchors the individual stratified layers of rock into a single high strength beam.

J-SAND and J-SANDY Props are lightweight, high-capacity props that are easily installed with nominal capacities of 35-100 tons.

Wide range of applications including rock bolts, rock dowels, rock spiles, soil nails, micro piles, etc.

Post-Tensioned Cable Bolt (PT) is manufactured using 0.6 or 0.7" cable and incorporates resin mixing bulbs and a stiffener tube.

JM CABLE SUMO Cable Bolts provide a very high strength steel wire strand, with metallurgy designed for applications in both coal and hard rock mining, as well as civil and tunneling projects.

Applying coatings to our products isolates and actively protects the product making them resistant to corrosive environments.

M3 expandable rock bolts offer superior quality that responds to the most demanding roof support applications. Its high load capacity and excellent elongation properties ensure safer working conditions and faster excavation cycles.

Available in hydraulic or electric pumps.

The patented Mech-Lok bolt with Energy Absorbing Ring is designed to be easily installed in poor ground conditions, but maximise load capacity.

The 47 mm Mech-Lok Bolt Dynamic 20 mm Hybrid Friction Bolt is designed for easy installation in poor and difficult ground conditions, such as squeezing and seismic ground conditions

The 47 mm Mech-Lok Dynamic 22 mm Hybrid Friction Bolt is designed for easy installation in poor and difficult ground conditions, such as squeezing and seismic ground conditions

Fast, single-step anchoring system using standard equipment. Efficient installation since drilling and grouting can be performed in a single operation, saving both time and money.

Jennmar plate products feature high strength, lightweight, and a low profile, effectively distributing roof bolt load evenly in all directions. Manufactured under rigid quality - control conditions in accordance with ASTM F432, plate ratings range from 20,000 to 60,000 lbs. Customized sizes and coatings are available.

Once cured, the Pourable Resin Grout forms an effective corrosion barrier from a pH of 2 through a pH of 11.

JENNMAR's array of props are easy to transport and install. They provide reliable support and help maintain the integrity of the mine roof. JENNMAR manufactures a full range of prop configurations with a variety of pre-load and yield options to meet your mine's specific requirements.

JENNMAR manufactures a full range of prop configurations with a variety of pre-load and yield options to meet your specific requirements.

The Self-Drilling bolt is a fully threaded hollow bar that initially serves as a drill rod, utilizing a lost bit. The thread is made to comply to ISO 10208. For use in unconsolidated ground or other difficult ground conditions.

JENNMAR's tensioned rebar bolts have threaded ends and can be used as fully grouted or point anchored systems.

Jennmar Engineering has designed, tested, and developed the Impact Resistant Lagging (IRL) system to protect steel sets. Various steel sets that are protected with IRL panels have been approved by MSHA and installed in several underground roof fall rehabilitation projects.

An environmentally friendly solution Jennmar Virsbolt is a safe and environmentally friendly way to speed up your tunneling operation. Just add water, no need for chemicals or cement grout to anchor the bolt. It creates a better working environment without the need to use chemicals.

YIELD-LOK Bolt is a new generation of yielding rock bolt that provides reliable ground control in both seismic and convergence ground conditions. It is fully grouted with resin or cement in the application and provides immediate primary support on installation.

JENNMAR offers a full range of hydraulic components designed to enhance the performance, safety, and efficiency of longwall mining systems.

The Super Hurricane can clean as far as 1,500 feet through ten 90 degree elbows, inside or outside corners, even irregular surfaces such as weld beads without stopping. The Super Hurricane Rotating Pipe Cleaning System process is completely environmentally friendly.

Jennmar's conventional bolts consist of a shell anchor headed smooth bar with a consistent threaded end. A bearing plate is also used to provide increased strata control. Jennmar offers several types of shell anchorage systems. Our bail anchors have full shell-length contact and work well in weak strata conditions.

J-Channel Beams, Wide Flange Beams & Heat Treated Serrated Steel Beams (Waffle)

Belt Hanger for Steel Sets, Utility Hangers, Belt Hangers, J-16, J-9, Rabbit Ear, and Angle

JENNMAR's Bendable Bolts are available where bending is necessary to permit installation of bars that are longer than the mine opening height.

JENNMAR Bolt Head Markings, Recommended BOLT Torque, and Cable and Threaded Bolts Color Codes

JENNMAR offers a complete line of cable support products. These products are based on a 7-strand, high-strength cable. JENNMAR offers an industry-leading line of cable products including non-tensioned cables, post-tensioned cables, tensionable cables for primary roof support, and fully-grouted cables.

With our heavy-duty coiling machine, JENNMAR can produce coil reels to fit mechanized cable bolting machines which increase productivity due to concurrent drilling and cable installation.

A Cable Tensioning Unit (CTU) is portable device that will pre-stress various size cables.

The CABLE-LOK Shell is a spring-loaded shell that can be automatically set on installation.

For Installation of Bearing Plates

T-Channels, Roof/ Rib Safety Channels, Roof and Mini Monster Mats

JENNMAR offers the industry's most proven combination bolt system in the mining industry by providing ultimate tension in weak strata.

All systems are configured with high strength bar: - (Grade 55 (55,000 psi minimum yield) - (Grade 75 (75,000 psi minimum yield)

JENNMAR offers a cuttable high strength molded fiberglass rib pan and plates for environments requiring corrosion resistance.

The D-Tech Bolt 20 mm is designed for highly seismic and converging geotechnical domains.

The D-Tech Bolt 23 mm is designed for highly seismic and converging geotechnical domains.

The Fast Anchor 3 is a double corrosion-resistant steel bolt for strata control that provides quick assembly and secure installation due to its expansion shell that provides immediate anchorage and generates superior grip upon application.

The JENNMAR FRICTION-LOK Stabilizer System is a strata control system designed to firmly control hard or soft rock. As lateral ground movement increases, the system increases its superior holding power.

JENNMAR is capable of providing powder-coated, epoxy-coated, and hot-dipped galvanized products.

Forged Head Rebar and J-BAR

Reliable self-drilling installation with single-pass drilling and grouting installation.

Various steel sets that are protected with JENNMAR's IRL panels have been approved by MSHA and installed in several underground roof fall rehabilitation projects.

The Fully-Grouted INSTAL Bolt is the ideal high tension bolt due to the resin that locks bolt tension within the system, while significantly slowing down the weathering process around the bolt hole.

J-Block products are composed of non-toxic incombustible materials whose air permeability and relative fire resistance characteristics are unequaled.

The J-CAN is a secondary standing support product with options in diameter and height.

The J-LOK resin in the cartridge is used to anchor bolts to the surrounding strata. This unification of the resin, bolt, and strata layers provides the necessary strength and rigidity to prevent sag by acting as a reinforcement that anchors the individual stratified layers of rock into a single high strength beam.

J-SAND and J-SANDY Props are lightweight, high-capacity props that are easily installed with nominal capacities of 35-100 tons.

Wide range of applications including rock bolts, rock dowels, rock spiles, soil nails, micro piles, etc.

The JM CABLE Fully Grouted Cable Bolt is proven to be very versatile roof support due to its ability to control many different ground conditions, from increasing the lifespan of standard cable bolt supports in long-term main entry systems to stopping the ingress of water.

The INSTAL CC Cable Bolt cable bolt is part of the INSTAL family of tensionable cable bolts and is the only tensionable system approved by MSHA as primary support.

Post-Tensioned Cable Bolt (PT) is manufactured using 0.6 or 0.7" cable and incorporates resin mixing bulbs and a stiffener tube.

The JM CABLE Silicone Injected Cable Bolt allows the use of longer cable bolts without concerns about water from drilling into aquifers in the above strata.

JM CABLE SUMO Cable Bolts provide a very high strength steel wire strand, with metallurgy designed for applications in both coal and hard rock mining, as well as civil and tunneling projects.

Applying coatings to our products isolates and actively protects the product making them resistant to corrosive environments.

M3 expandable rock bolts offer superior quality that responds to the most demanding roof support applications. Its high load capacity and excellent elongation properties ensure safer working conditions and faster excavation cycles.

Available in hydraulic or electric pumps.

The patented Mech-Lok bolt with Energy Absorbing Ring is designed to be easily installed in poor ground conditions, but maximise load capacity.

The 47 mm Mech-Lok Bolt Dynamic 20 mm Hybrid Friction Bolt is designed for easy installation in poor and difficult ground conditions, such as squeezing and seismic ground conditions

The 47 mm Mech-Lok Dynamic 22 mm Hybrid Friction Bolt is designed for easy installation in poor and difficult ground conditions, such as squeezing and seismic ground conditions

Fast, single-step anchoring system using standard equipment. Efficient installation since drilling and grouting can be performed in a single operation, saving both time and money.

Jennmar plate products feature high strength, lightweight, and a low profile, effectively distributing roof bolt load evenly in all directions. Manufactured under rigid quality - control conditions in accordance with ASTM F432, plate ratings range from 20,000 to 60,000 lbs. Customized sizes and coatings are available.

Once cured, the Pourable Resin Grout forms an effective corrosion barrier from a pH of 2 through a pH of 11.

JENNMAR's array of props are easy to transport and install. They provide reliable support and help maintain the integrity of the mine roof. JENNMAR manufactures a full range of prop configurations with a variety of pre-load and yield options to meet your mine's specific requirements.

JENNMAR manufactures a full range of prop configurations with a variety of pre-load and yield options to meet your specific requirements.

The Self-Drilling bolt is a fully threaded hollow bar that initially serves as a drill rod, utilizing a lost bit. The thread is made to comply to ISO 10208. For use in unconsolidated ground or other difficult ground conditions.

JENNMAR's tensioned rebar bolts have threaded ends and can be used as fully grouted or point anchored systems.

JENNMAR offers the mining and tunneling industries the most reliable, high-strength truss systems available.

Jennmar Engineering has designed, tested, and developed the Impact Resistant Lagging (IRL) system to protect steel sets. Various steel sets that are protected with IRL panels have been approved by MSHA and installed in several underground roof fall rehabilitation projects.

An environmentally friendly solution Jennmar Virsbolt is a safe and environmentally friendly way to speed up your tunneling operation. Just add water, no need for chemicals or cement grout to anchor the bolt. It creates a better working environment without the need to use chemicals.

YIELD-LOK Bolt is a new generation of yielding rock bolt that provides reliable ground control in both seismic and convergence ground conditions. It is fully grouted with resin or cement in the application and provides immediate primary support on installation.

1-Day J-SEAL differs from traditional J-SEAL as the non-foamed formulation provides for extended pumping distances along with the quick strength gain required for an approved seal in less than 24 hours.

AirSTOP & curtains manage and control underground mine ventilation. We use a selection of high-strength PVC fabrics best suited to your needs for height, length, weight, tear strength, edge reinforcement, attachment and hanging, visibility and safety.

Inflatable AirSTOPs are patented high-strength and rapidly-deployable inflatable stoppings, barriers and seals that come in range of sizes to fit most mines & tunnels.

Lightweight, efficient, and robust method for achieving sound attenuation. HardLine™ silencers are bolted to either the inlet or outlet of auxiliary fans. Typically applied to both ends of the fan or on a single end between the fan and sound sensitive location.

Semi-rigid polymer branch tube accessories for mine and tunnel ventilation.

Semi-rigid polymer tubing for horizontal mine and tunnel ventilation.

J-SEAL is a specialized foaming cement that is used to build permanent coal mine ventilation seals. The rapid strength gain provides immediate ground support to the surrounding strata with quicker cure times to meet seal approval specifications in days rather than weeks.

JENNCHEM Underground Roadway Repair is a specially formulated fast-setting concrete designed for the mining and tunneling industries.

JENNMAR Overcast Systems are designed to be modular reusable structures that are used in underground high-pressure situations to insure intake air is not contaminated with return air.

JENNMAR's Metal Stoppings are an economical solution for underground mine ventilation control. This alternative to conventional block stoppings is comprised of a set of vertically telescoping steel panels that provide a safe, low-cost system to deliver positive control in all mining environments.

Hi-strength wire-reinforced flexible ventilation ducting manufactured for positive or negative pressure in mine and tunnel applications.

Hi-strength flexible fabric tubing for positive high-pressure airflow in mine and tunnel ventilation.

Turnstone Industrial Solutions now offers low-cost and competitive spiral steel tubing solutions for tunneling and mining ventilation applications.

Hi-strength oval-chambered flexible fabric tubing for mine and tunnel ventilation.

Combination Plate with Riser are available for 60 lb and 85 lb rail.

Available in both double end and single end. Wedge-type clamp secures the derail and flag to the railhead.

Double End Gauge Rod has two jaws, two nuts, and two washers on both ends of the rod. Guardrails measure 4'6" in length for 40 lb, 60 lb, and 85 lb track gauges.

The heel block welded together from tough rolled-steel components, can be made to fit switches of any length and rail of any weight.

JENNMAR offers a wide range of rail connector bars including compromise bars, splice bars, and joint bars. Our bars are hot-formed with high-quality steel for maximum strength.

Hydraulic or Screw Type Rail Benders

JENNMAR provides a comprehensive range of rail products designed for durability, safety, and reliability. Our solutions support rail infrastructure in various industries, ensuring smooth operations and long-term performance.

Technical Data and Dimensions for 40 lb., 60 lb., 85 lb., and 115 lb. rail sections.

JENNMAR offers a complete line of steel and iron clad ties to the mining and tunneling industries. We can engineer our ties to meet your specific haulage application. Our ties can be designed for any type of rail and gauge.

JENNMAR can supply fully erected or knockdown turnouts kits, rails, and accessories for 40 lb., 60 lb., 85 lb., and 115 lb. light rail trackwork in any gauge.

Inside and Outside Rail Rerailers, Straddle-Style Rail Rerailers, and Rerailers Clamp

K11, K13, K15, K17 and K18 Switch Tie Sets

Track stabilizers stabilize the track by applying force directly into the track structure to keep the track from sliding horizontally. Sold in pairs.

Hand Track Tools for Track Maintenance and Repair

Our Tunneling Ties are specifically designed for use in tunnel projects where the bottom surface is not flat.

Wheel Stops are used for low-speed stopping of rail cars. Clamp-type car stop is designed for permanent or temporary installation on exposed rails. Used when heavy and expensive bumping posts are not required, the stop is simple to handle and attach.

Jennmar's conventional bolts consist of a shell anchor headed smooth bar with a consistent threaded end. A bearing plate is also used to provide increased strata control. Jennmar offers several types of shell anchorage systems. Our bail anchors have full shell-length contact and work well in weak strata conditions.

J-Channel Beams, Wide Flange Beams & Heat Treated Serrated Steel Beams (Waffle)

Belt Hanger for Steel Sets, Utility Hangers, Belt Hangers, J-16, J-9, Rabbit Ear, and Angle

JENNMAR's Bendable Bolts are available where bending is necessary to permit installation of bars that are longer than the mine opening height.

JENNMAR Bolt Head Markings, Recommended BOLT Torque, and Cable and Threaded Bolts Color Codes

JENNMAR offers a complete line of cable support products. These products are based on a 7-strand, high-strength cable. JENNMAR offers an industry-leading line of cable products including non-tensioned cables, post-tensioned cables, tensionable cables for primary roof support, and fully-grouted cables.

A Cable Tensioning Unit (CTU) is portable device that will pre-stress various size cables.

The channel sections are specifically designed for use with structural members and ease of installation. The sections and materials used is design for efficient installation and transportation to the tunnel location.

T-Channels, Roof/ Rib Safety Channels, Roof and Mini Monster Mats

JENNMAR offers the industry's most proven combination bolt system in the mining industry by providing ultimate tension in weak strata.

All systems are configured with high strength bar: - (Grade 55 (55,000 psi minimum yield) - (Grade 75 (75,000 psi minimum yield)

JENNMAR offers a cuttable high strength molded fiberglass rib pan and plates for environments requiring corrosion resistance.

Forged Head Rebar and J-BAR

Various steel sets that are protected with JENNMAR's IRL panels have been approved by MSHA and installed in several underground roof fall rehabilitation projects.

The Fully-Grouted INSTAL Bolt is the ideal high tension bolt due to the resin that locks bolt tension within the system, while significantly slowing down the weathering process around the bolt hole.

The J-LOK resin in the cartridge is used to anchor bolts to the surrounding strata. This unification of the resin, bolt, and strata layers provides the necessary strength and rigidity to prevent sag by acting as a reinforcement that anchors the individual stratified layers of rock into a single high strength beam.

J-SAND and J-SANDY Props are lightweight, high-capacity props that are easily installed with nominal capacities of 35-100 tons.

Wide range of applications including rock bolts, rock dowels, rock spiles, soil nails, micro piles, etc.

The JM CABLE Fully Grouted Cable Bolt is proven to be very versatile roof support due to its ability to control many different ground conditions, from increasing the lifespan of standard cable bolt supports in long-term main entry systems to stopping the ingress of water.

The INSTAL CC Cable Bolt cable bolt is part of the INSTAL family of tensionable cable bolts and is the only tensionable system approved by MSHA as primary support.

Post-Tensioned Cable Bolt (PT) is manufactured using 0.6 or 0.7" cable and incorporates resin mixing bulbs and a stiffener tube.

The JM CABLE Silicone Injected Cable Bolt allows the use of longer cable bolts without concerns about water from drilling into aquifers in the above strata.

JM CABLE SUMO Cable Bolts provide a very high strength steel wire strand, with metallurgy designed for applications in both coal and hard rock mining, as well as civil and tunneling projects.

Jennmar plate products feature high strength, lightweight, and a low profile, effectively distributing roof bolt load evenly in all directions. Manufactured under rigid quality - control conditions in accordance with ASTM F432, plate ratings range from 20,000 to 60,000 lbs. Customized sizes and coatings are available.

Once cured, the Pourable Resin Grout forms an effective corrosion barrier from a pH of 2 through a pH of 11.

JENNMAR's array of props are easy to transport and install. They provide reliable support and help maintain the integrity of the mine roof. JENNMAR manufactures a full range of prop configurations with a variety of pre-load and yield options to meet your mine's specific requirements.

JENNMAR manufactures a full range of prop configurations with a variety of pre-load and yield options to meet your specific requirements.

JENNMAR's tensioned rebar bolts have threaded ends and can be used as fully grouted or point anchored systems.

JENNMAR offers the mining and tunneling industries the most reliable, high-strength truss systems available.

Jennmar Engineering has designed, tested, and developed the Impact Resistant Lagging (IRL) system to protect steel sets. Various steel sets that are protected with IRL panels have been approved by MSHA and installed in several underground roof fall rehabilitation projects.

4-flange liner plates manufactured by Jennmar Civil are available in 16" and 24" widths as corrugated or smooth plates. Liner plates are formed from one piece of steel to provide longitudinal and circumferential flanges with optimum load-bearing and bending resistance characteristics.

Used in new mining and tunneling excavations and rehab of existing tunnels, entries, and underground spaces. Comprised of cold formed or rolled and cut-to-length Wide-Flange Beams fabricated into segments, tied together with tie rods and pipe spacers on 4 or 5 feet centers.

J-Channel Beams, Wide Flange Beams & Heat Treated Serrated Steel Beams (Waffle)

The channel sections are specifically designed for use with structural members and ease of installation. The sections and materials used is design for efficient installation and transportation to the tunnel location.

Various steel sets that are protected with JENNMAR's IRL panels have been approved by MSHA and installed in several underground roof fall rehabilitation projects.

JENNMAR Overcast Systems are designed to be modular reusable structures that are used in underground high-pressure situations to insure intake air is not contaminated with return air.

Look to Jennmar Civil for quality USA manufacturing and development of ground support elements. We provide designs and products for Lattice Girders used in SEM/NATM construction.

JENNMAR's array of props are easy to transport and install. They provide reliable support and help maintain the integrity of the mine roof. JENNMAR manufactures a full range of prop configurations with a variety of pre-load and yield options to meet your mine's specific requirements.

JENNMAR, in conjunction with our sister affiliate engineering company, JENNMAR Engineering can custom design arch and square set support systems as well as tunnel and shaft rings.

The TH Arch system has quickly gained wide market acceptance by uniting high resistance to load along with dynamic behavior that is unseen in other arches in the industry.

Jennmar Engineering has designed, tested, and developed the Impact Resistant Lagging (IRL) system to protect steel sets. Various steel sets that are protected with IRL panels have been approved by MSHA and installed in several underground roof fall rehabilitation projects.

JENNMAR Civil offers 2-Flange Liner Plate that provides optimum shaft stability and protection when constructing new utility tunnels, relining structures under highways and railroads, and lining vertical shafts.