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MINING & TUNNELING

Supporting Space Underground

JENNMAR has been an innovative leader in ground control for the mining industry for more than forty years. Our brand of affiliates provide the ability to offer a complete range of complementary ground control products and services ensuring quality, efficiency and availability, resulting in reduced costs, reduced lead times and increased customer satisfaction.

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HEADED
REBAR BOLTS

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ANCHOR PRODUCTS

JENNMAR’S line of expansion anchors provides a strong, consistent tension and anchorage for a wide range of strata conditions. A high-performance conventional bolting system can use expansion anchors with smooth bars. JENNMAR’S expansion anchors can be combined with a deformed bar and J-LOK resin to make an INSTAL bolt system, a high-performance primary bolting system.

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CONVENTIONAL / MECHANICAL BOLTS

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JM ALL
THREAD BAR

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FRICTION-LOK® STABILIZER SYSTEM

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.

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FRICTION-LOK®
SELF DRILLING

JENNMAR has developed the Self-Drilling FRICTION-LOK®, a new design where the borehole is drilled, and the friction bolt is installed simultaneously. This system was developed to reduce operating times and thereby increase the performance cycle.

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M3™ EXPANDABLE ROCK BOLT

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.

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MPA BOLT SYSTEM™

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.

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PUMPABLE J-LOK P™

J-Lok P is a two-part resin that provides a mechanical link between the wall of a borehole and the surface of the tendon.

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FAST ANCHOR™
3 BOLT SYSTEM

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, which offers immediate anchorage and generates superior grip upon application. Fast Anchor 3 is designed within the highest quality standard for this type of bolt and performs accordingly.

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SELF-DRILLING HOLLOW BAR ANCHOR SYSTEM

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

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GALVANIZED & COATED PRODUCTS

Galvanized products use zinc coatings that serve as a sacrificial metal corroding preferentially to steel. Galvanized products have excellent bond characteristics to grout or concrete and do not require as much care in handling as epoxy-coated products.

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CUTTABLE AND
CORROSION-RESISTANT 
PRODUCTS

JENNMAR offers a cuttable high-strength molded fiberglass rib pan and plates for environments requiring corrosion resistance. Sinkable and non-sinkable plates are available according to customer requirements.

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POURABLE RESIN GROUT

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J-LOK® RESIN

J-LOK equipment is the most modern and technologically advanced in the resin business, equipped with the most accurate system for ratio control of the resin/limestone mixture, ensuring that resin/catalyst proportions are consistent. The entire plant is interconnected to provide coordinated control of the entire process.

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TH ARCH SYSTEM

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.

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J-LOK® RESIN CARTRIDGE DRILL HOLE AND FILL CHARTS

The required diameter and length of J-LOK cartridges for civil and tunneling applications, not governed by ASTM F-432-10, are calculated by estimating the annulus volume between the bolt and the borehole.

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PLATES

JENNMAR plate products feature high-strength, lightweight and a low profile, effectively distributing the roof bolt load

evenly in all directions.

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CHANNELS AND ROOF MATS

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BELT AND UTILITY HANGERS

JENNMAR offers a complete line of belt hangers to be used for hanging belt structures within the mine.

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VENTILATION

We partner with Turnstone Industrial Solutions for all of our mine ventilation needs. To learn more about the products they offer, click the button below to visit their website.

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LINER PLATE

Together, JENNMAR Civil can help you solve problems and save money through creative thinking and quality manufacturing. Please review our website and contact or call us with questions or inquiries.

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