Product Catalog

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

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.

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.

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.

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 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.

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.

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.

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

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

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.

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)

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.

Forged Head Rebar and J-BAR

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.

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

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.

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.

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.

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.

Umbrella canopy tubes are self-drilling casing pipes used in soft ground tunneling as forepoling.

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.

Steel ribs are efficient and safe ground control elements in underground construction. Selection of section type and dimension is accomplished following structural and project requirements. Besides custom-bent steel ribs, straight beams, forepoling sheets, and steel lagging can also be fabricated.

Steel ribs are efficient and safe ground control elements in underground construction. Selection of section type and dimension is accomplished following structural and project requirements. Besides custom-bent steel ribs, straight beams, forepoling sheets, and steel lagging can also be fabricated.

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.

Supporting new tunnel heading or mine entry where rockfalls are possible and providing support for weak ground at the crown or brow during surface to underground transition.

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.

Used for support of new tunnels and excavation in both soft and hard rock tunnels. Circular in profile, comprised of cold-formed or rolled Wide-Flange Beams cut into segments and bolted together in the field.

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

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.

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

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.

Our filament wound fiberglass ducting is new and improved manufacturing process and materials.

Our filament wound fiberglass ducting is new and improved manufacturing process and materials.

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

Turnstone Ventilation Systems and affiliates offer a turnkey solution to underground ventilation challenges. Rather than being just a seller of ducting and fans, we aim to combine numerous disciplines to provide a total system solution.

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