Product Catalog

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.