jennmar rock bolts introductions

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  • JENNMAR

    From bolts and beams, to channels and trusses, to resin and rebar, JENNMAR is proud to manufacture products that make Coal & Hard Rock Mining, Tunneling and Civil Construction safer and more efficient. View Full Product Catalog.

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  • M3 Expandable Rock Bolt | JENNMAR

    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. This latest generation of rock bolt includes these improvements: • Redesigned Tooling to reduce the thinning in the ...

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  • PRODUCT CATALOG - JENNMAR

    2016-3-31 · to resin and rebar, JENNMAR is proud to manufacture products that make Coal & Hard Rock Mining safer and more efficient. Safely keeping the ground above under control. Our network of industry affiliates ensure quality, compliance, efficiency, availability and safety providing reliable products and engineering solutions for the tunneling industry.

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  • | JENNMAR

    JENNMAR plate products feature high strength, light weight 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.

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  • Products » Jennmar

    2021-4-1 · JENNMAR Australia manufactures a broad range of reliable products, from rock bolts and plates, to cable bolts and cuttable support, to resin and cement anchoring. JENNMAR can supply the complete ground support requirements for our customers in coal mining, hard rock mining and civil tunnelling.

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  • SAFETY & INSTALLATION INSTRUCTION MANUAL - JENNMAR

    2016-3-31 · 2. Notched bendable bolts can be configured as either a non-tensioned headed rebar, torque-tension, Super-Twist, or INSTAL bolt. 3. All installation instructions for those type bolts are to be followed. 4. However, when bending a notched bolt, the restraining or gripping point must not be in the notched portion of the bolt.

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  • Products » Jennmar

    2021-4-1 · JENNMAR Australia is a leading manufacturer of ground support products used in metalliferous (Hardrock) mining. Providing the full range of products and utilizing innovations developed in collaboration with Hardrock mine sites, JENNMAR offers the metalliferous mine the complete ground support solution. Download JENNMAR Hardrock Catalogue.

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  • SELECTED GrounD ConTroL ProDuCTS - Tunnelbuilder

    2020-10-13 · Since 1995 JENNMAR® has been producing cable bolts utilizing geotechnical input from around the globe. The JENNMAR product line has progressed from the initial introduction of a resin point anchored, non-tensioned cable bolt through tensioned cable bolts to today’s fully grouted cable bolt. The multi-bulb technology offers excellent

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  • Jennmar

    2021-4-1 · JENNMAR Australia. For more than 20 years, our mission has been focused on developing and manufacturing a complete range of high quality ground control products. We have continuously developed new initiatives to reduce the time and associated costs our customers need to spend on ground support. Our Rapid Development Underground products have ...

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  • Mining | Jennmar

    Since 1972 our mission has been focused on developing and manufacturing quality ground control products. Today we make a broad range of reliable products, from bolts and beams, to channels and trusses, to resin and rebar. We’re proud to make products that make the industries we serve safer and more efficient. Along with JENNMAR manufacturing ...

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  • Products » Jennmar

    2021-4-1 · JENNMAR Australia manufactures a broad range of reliable products, from rock bolts and plates, to cable bolts and cuttable support, to resin and cement anchoring. JENNMAR can supply the complete ground support requirements for our customers in coal mining, hard rock mining and civil tunnelling.

    Get Price
  • Products » Jennmar

    2021-4-1 · JENNMAR Australia is a leading manufacturer of ground support products used in metalliferous (Hardrock) mining. Providing the full range of products and utilizing innovations developed in collaboration with Hardrock mine sites, JENNMAR offers the metalliferous mine the complete ground support solution. Download JENNMAR Hardrock Catalogue.

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  • Rock Bolting - WOMP

    Rock bolts are widely used for consolidating the rock strata. In conventional strata support systems, a bore is drilled into the rock by a drill rod, which is then removed and a rock bolt is then installed in the drilled hole and secured in place typically using a resin or cement based grout.

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  • BREAKABLE ROCK BOLT - JENNMAR CORPORATION

    Rock bolts are required to be high strength, typically over 30 tonnes ultimate tensile strength. Rock bolts are typically bonded to the borehole walls by resin. It is advantageous for the surface of the rock bolt to be deformed in order to provide high bond strength between the bolt/resin/rock …

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  • Self Drilling Rock Bolt - JENNMAR CORPORATION

    2021-4-1 · JENNMAR Australia provides the most extensive range of ground support products available for underground coal mining. Our products are designed for Australian underground mining conditions and are manufactured and warehoused in Australia at locations close to each of the major underground coal mining regions. Download JENNMAR Coal Catalogue.

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  • Products » Jennmar

    2021-4-1 · JENNMAR Australia provides the most extensive range of ground support products available for underground coal mining. Our products are designed for Australian underground mining conditions and are manufactured and warehoused in Australia at locations close to each of the major underground coal mining regions. Download JENNMAR Coal Catalogue.

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  • Products » Jennmar

    2021-3-18 · Rock bolt corrosion - an experimental study Naj Aziz University of Wollongong, [email protected] Peter Craig Jennmar Australia Jan Nemcik University of Wollongong, [email protected] Faisal I. Hai University of Wollongong, [email protected] Research Online is the open access institutional repository for the University of Wollongong.

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  • Jennmar - Construction Today

    2011-12-13 · Among the products Jennmar offers for rock support challenges in the construction and mining industries is the PyTHON rock bolt range, which features friction bolts that support roofs. Their high load-bearing capacity and elongation properties ensure safer working conditions and faster excavation cycles at low cost, the company says.

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  • JENNMAR Civil - NATWeek

    JENNMAR Civil was founded in 2013. JENNMAR Civil is dedicated to providing products and services to the Civil Construction and Tunneling industries. We’ve made key acquisitions of people and equipment to further enhance our deep commitment to serve the tunneling industry. Our primary product roster includes M3® expandable rock bolts, FRICTION-LOK® stabilizer systems, …

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  • Development of a New Yielding Rock Bolt - Yield-Lok Bolt ...

    2010-6-27 · Rock burst is one of the greatest challenges to ground control in the mining industry. There are more and more industry requirements on yielding rock support. Since 2008, Jennmar has been conducting large scale research and development works to develop a technically reliable and cost effective yielding rock bolt.

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  • Jennmar - The Tunnelling Journal

    Our primary product roster includes M3® expandable rock bolts, FRICTION-LOK® stabilizer systems, Fast Anchors™ DCP Bolts, steel sets, steel tunnel ribs & shaft rings, lattice girders, rail ties, resins and with our alliance partners, Contech, we also provide 2-flange liner plate. Contact Details. Jennmar 258 Kappa Drive Pittsburgh PA 15238

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  • Jenmar Python Swellex Bolts, Self Drilling Anchor, SDA Bar ...

    Typically, the resin is set after two to three minutes. Cable bolts have heretofore been primarily used as secondary roof support structures with tensionable rock bolts serving as the primary anchorage mechanism. Tensionable cable bolts are the subject of U.S. Pat. No. 5,378,087 to Locotos and U.S. Pat. No. 5,525,013 to Seegmiller et al.

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  • Tensionable cable bolt with mixing assembly - Jennmar ...

    2003-2-21 · Filed: February 21, 2003. Date of Patent: February 26, 2008. Assignee: Jennmar Corporation. Inventors: John C. Stankus, John G. Oldsen, Demrey G. Brandon. Rock bolt. Publication number: 20080038068. Abstract: The present invention relates to rock bolts which may be used in mining applications. The rock bolt of this invention includes a ...

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  • Patents Assigned to Jennmar Corporation - Justia Patents ...

    Rock bolts, such as rigid shaft rock bolts and flexible cable bolts are widely used for consolidating the rock strata. In conventional strata support systems, a bore is drilled into the rock by a drill rod, which is then removed and a rock bolt is then installed in the drilled hole and secured in place typically using a resin or cement based grout.

    Get Price
  • Tensioning Assembly For a Cable Bolt - JENNMAR

    JENNMAR | 4,646 followers on LinkedIn. Quality products from quality people | We’re JENNMAR, a global, family-owned company that is leading the way in ground control technology for the mining ...

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  • JENNMAR | LinkedIn

    Jennmar Australia is the distributor of the resins manufactured by J-Lok Resins, used to secure its bolts into the roof strata. The resin capsule manufacturing operation was established in 2008 as ...

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  • JennmarJining Mine Roof Support Products Co.,Ltd

    Rocbolt Technologies China Ltd. is a 100% foreign owned enterprise consisting of JM 50% and DSI 50% .The JV is excited to serve the mining and tunneling industries by providing quality products and services.Our main products include rock bolts, cable bolts, cable trusses, friction lok, plates, resin products, and bolting accessories.

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  • Jenmar Python Swellex Bolts, Self Drilling Anchor, SDA Bar ...

    Typically, the resin is set after two to three minutes. Cable bolts have heretofore been primarily used as secondary roof support structures with tensionable rock bolts serving as the primary anchorage mechanism. Tensionable cable bolts are the subject of U.S. Pat. No. 5,378,087 to Locotos and U.S. Pat. No. 5,525,013 to Seegmiller et al.

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  • Tensionable cable bolt with mixing assembly - Jennmar ...

    Rock bolts, such as rigid shaft rock bolts and flexible cable bolts are widely used for consolidating the rock strata. In conventional strata support systems, a bore is drilled into the rock by a drill rod, which is then removed and a rock bolt is then installed in the drilled hole and secured in place typically using a resin or cement based grout.

    Get Price
  • Tensioning Assembly For a Cable Bolt - JENNMAR

    2018-1-1 · To identify root causes of corrosion failure of the expandable rock bolt, field samples, including corroded bolt samples and relevant rock samples, were collected from collaborating hard rock mines and tested in Jennmar Research Center in Pittsburgh, PA. 2.1. Inflation test of expandable rock bolts

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  • Development and evaluation of corrosion resistant coating ...

    2016-7-19 · Rock bolts are used for support in a variety of engineering applications. This test provides a quantitative measure of the performance of a rock bolt or its anchor. 4.2 Tension.-At least 5 percent of the installed rock bolts or their anchors should be tested to verify if the rock bolts or their anchors have the specified tension. 5.

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  • Determining Rock Bolt or Anchor Tension Using a Torque Wrench

    2013-6-23 · JENNMAR_CableBolts - Free download as PDF File (.pdf), Text File (.txt) or read online for free.

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  • JENNMAR CableBolts | Cable | Screw

    2009-6-9 · The roof bit drill may further include a drill depth locator to identify when the drill has been advanced within a mine roof to a predetermined depth. A method for using the roof drill bit is also disclosed herein. Type: Grant. Filed: April 10, 2007. Date of Patent: May 4, 2010. Assignees: Kennametal, Inc., Jennmar Corporation.

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  • Patents Assigned to Jennmar Corporation - Justia Patents ...

    Zoek naar vacatures bij Jennmar. 27 vacatures bij Jennmar, inclusief informatie over salarissen, beoordelingen en reviews, geplaatst door werknemers van Jennmar.

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  • Vacatures bij Jennmar | Glassdoor.be

    View the profiles of people named Rock Parcker. Join Facebook to connect with Rock Parcker and others you may know. Facebook gives people the power to...

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  • Tensionable cable bolt - Jennmar Corporation

    Typically, the resin is set after two to three minutes. Cable bolts have heretofore been primarily used as secondary roof support structures with tensionable rock bolts serving as the primary anchorage mechanism. Tensionable cable bolts are the subject of U.S. Pat. No. 5,378,087 to Locotos and U.S. Pat. No. 5,525,013 to Seegmiller et al.

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  • DSI has signed agreements to acquire Jennmar businesses ...

    2016-2-3 · “DSI’s strong presence in Western US hard rock mining will further strengthen Jennmar’s position in this segment of the market. On the other side, its activities in coal mining will complement our existing strong footprint and close some gaps in our offering”, explains Tony Calandra, Executive Vice President of Jennmar.

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  • Statement of Issues - ACCC

    FCI’s subsidiary, Jennmar, manufactures and supplies rock bolts and plates, resins, mesh and cementitious grout primarily to the Australian soft rock mining industry, although it supplies some ground support products for use in hard rock mining applications and …

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  • EX-1.8 PRESS RELEASE DATED OCT 19,2004

    2017-10-11 · About Jennmar. Jennmar Corporation, based in Pittsburgh, offers coal and hard rock producers the industries finest, most technically advanced line of roof control products. Participating in various businesses related to the coal mining industry since 1922, the company shifted focus in 1972 to concentrate on the manufacture of roof support systems.

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  • Patents Assigned to Jennmar Corporation - Justia Patents ...

    2001-4-4 · Abstract: A tensionable mine roof cable bolt having a resin grouted upper portion and a mechanical anchor. The cable bolt is rotated during installation in a mine roof bore hole to mix resin and engage the mechanical anchor with the rock. A drivehead press fitted onto the lower end of the cable may be stripped off the bolt upon tensioning of the bolt to a predetermined load.

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  • DYWIDAG Rock Bolts - DSI EMEA

    Expansion Shell Anchors Rock Bolts with Expansion Shell. Extremely fast and easy installation. Immediate load bearing capacity in the borehole. Galvanized version available. Retensionable. Various angle compensation designs available.

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  • US20120070234A1 - Rock Bolt - Google Patents

    The present invention relates to rock bolts which may be used in mining applications. The rock bolt of this invention includes a mechanical anchoring arrangement to facilitate retaining the rock bolt in a borehole, and also a drill bit to enable self drilling of the rock bolt. Rotation of the rock bolt about an axis of the rock bolt in a first direction causes the drill bit to drill into rock ...

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  • Patents Assigned to Jennmar Corporation - Justia Patents ...

    2009-6-9 · The roof bit drill may further include a drill depth locator to identify when the drill has been advanced within a mine roof to a predetermined depth. A method for using the roof drill bit is also disclosed herein. Type: Grant. Filed: April 10, 2007. Date of Patent: May 4, 2010. Assignees: Kennametal, Inc., Jennmar Corporation.

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  • JENNMAR | LinkedIn

    JENNMAR | 4,645 followers on LinkedIn. Quality products from quality people | We’re JENNMAR, a global, family-owned company that is leading the way in ground control technology for the mining, tunneling and civil construction industries. Since 1972 our mission has been focused on developing and manufacturing quality ground control products. Today we make a broad range of reliable …

    Get Price