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Ground control solutions for Grand Paris: Line 15 – Lot T2C

Ground control solutions for Grand Paris: Line 15 – Lot T2C Ground control solutions for Grand Paris: Line 15 – Lot T2C Ground control solutions for Grand Paris: Line 15 – Lot T2C Ground control solutions for Grand Paris: Line 15 – Lot…

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17,000 m DSI Hollow Bars deep beneath Downtown London

17,000 m DSI Hollow Bars deep beneath Downtown London 17,000 m DSI Hollow Bars deep beneath Downtown London 17,000 m DSI Hollow Bars deep beneath Downtown London 17,000 m DSI Hollow Bars deep beneath Downtown London 17,000 m DSI Hollow…

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New Longwall Mesh Mat Recovery System for Springvale Mine

New Longwall Mesh Mat Recovery System for Springvale Mine New Longwall Mesh Mat Recovery System for Springvale Mine New Longwall Mesh Mat Recovery System for Springvale Mine New Longwall Mesh Mat Recovery System for Springvale Mine New…

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DB German Rail, New track project Cologne - Rhein/Main Section MITTE, Subsection B, Germany

DB German Rail, New track project Cologne - Rhein/Main Section MITTE, Subsection B, Germany DB German Rail, New track project Cologne - Rhein/Main Section MITTE, Subsection B, Germany DB German Rail, New track project Cologne -…

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The Ceneri Base Tunnel: DSI supplies Ground Support Products for Switzerland’s third largest Tunnel

The Ceneri Base Tunnel: DSI supplies Ground Support Products for Switzerland’s third largest Tunnel The Ceneri Base Tunnel: DSI supplies Ground Support Products for Switzerland’s third largest Tunnel The Ceneri Base Tunnel: DSI…

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DSI stabilize the largest Excavation for a Single Project in South Africa: The new Discovery Office Building

DSI stabilize the largest Excavation for a Single Project in South Africa: The new Discovery Office Building DSI stabilize the largest Excavation for a Single Project in South Africa: The new Discovery Office Building DSI stabilize the…

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DSI Mine Fill Resins pass DMT’s "Big Fire Test"

DSI Mine Fill Resins pass DMT’s "Big Fire Test" DSI Mine Fill Resins pass DMT’s "Big Fire Test" DSI Mine Fill Resins pass DMT’s "Big Fire Test" DSI Mine Fill Resins pass DMT’s "Big Fire Test" DSI Mine Fill Resins pass DMT’s "Big Fire…

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Redevelopment of the Village Walk Site in Sandton using DSI

Redevelopment of the Village Walk Site in Sandton using DSI Redevelopment of the Village Walk Site in Sandton using DSI Redevelopment of the Village Walk Site in Sandton using DSI Redevelopment of the Village Walk Site in Sandton using…

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Challenging Excavation Stabilization using DSI: The new Old Mutual Head Office in Sandton

Challenging Excavation Stabilization using DSI: The new Old Mutual Head Office in Sandton Challenging Excavation Stabilization using DSI: The new Old Mutual Head Office in Sandton Challenging Excavation Stabilization using DSI: The new…

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The Transolímpica Tunnel: Easy and Fast Stabilization using DSI GRP Rock Bolts

The Transolímpica Tunnel: Easy and Fast Stabilization using DSI GRP Rock Bolts The Transolímpica Tunnel: Easy and Fast Stabilization using DSI GRP Rock Bolts The Transolímpica Tunnel: Easy and Fast Stabilization using DSI GRP Rock…

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New Tunnels in Brazil: More Safety with DSI Rock Bolts

New Tunnels in Brazil: More Safety with DSI Rock Bolts New Tunnels in Brazil: More Safety with DSI Rock Bolts New Tunnels in Brazil: More Safety with DSI Rock Bolts New Tunnels in Brazil: More Safety with DSI Rock Bolts New Tunnels in…

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The Mandacarú Tunnel in Bahia: DSI Rock Bolts secure Brazil’s Future as an Exporter

The Mandacarú Tunnel in Bahia: DSI Rock Bolts secure Brazil’s Future as an Exporter The Mandacarú Tunnel in Bahia: DSI Rock Bolts secure Brazil’s Future as an Exporter The Mandacarú Tunnel in Bahia: DSI Rock Bolts secure Brazil’s…

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Extension of the BR 101 Motorway: DSI Rock Bolts stabilize the Formigão Tunnel

Extension of the BR 101 Motorway: DSI Rock Bolts stabilize the Formigão Tunnel Extension of the BR 101 Motorway: DSI Rock Bolts stabilize the Formigão Tunnel Extension of the BR 101 Motorway: DSI Rock Bolts stabilize the Formigão…

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Stabilisation of Approach Cuttings for Hindhead Tunnel with DSI Soil Nails

Stabilisation of Approach Cuttings for Hindhead Tunnel with DSI Soil Nails Stabilisation of Approach Cuttings for Hindhead Tunnel with DSI Soil Nails Stabilisation of Approach Cuttings for Hindhead Tunnel with DSI Soil Nails…

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Open roads in the South of Vienna DSI Bars Anchor the Underwater Concrete Slab of the new Rannersdorf S1 Tunnel

Open roads in the South of Vienna DSI Bars Anchor the Underwater Concrete Slab of the new Rannersdorf S1 Tunnel Open roads in the South of Vienna DSI Bars Anchor the Underwater Concrete Slab of the new Rannersdorf S1 Tunnel Open roads…

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DSI Permanent Single Bar Anchors secure new electronuclear accelerator

DSI Permanent Single Bar Anchors secure new electronuclear accelerator DSI Permanent Single Bar Anchors secure new electronuclear accelerator DSI Permanent Single Bar Anchors secure new electronuclear accelerator DSI Permanent Single…

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Innovative Rehabilitation of the Lermooser Tunnel using permanent DSI Anchors and DSI Inject Resins

Innovative Rehabilitation of the Lermooser Tunnel using permanent DSI Anchors and DSI Inject Resins Innovative Rehabilitation of the Lermooser Tunnel using permanent DSI Anchors and DSI Inject Resins Innovative Rehabilitation of the…

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First Utilization of DSI Piles in India

First Utilization of DSI Piles in India First Utilization of DSI Piles in India First Utilization of DSI Piles in India First Utilization of DSI Piles in India First Utilization of DSI Piles in India First Utilization of DSI Piles in…

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Improved safety with DSI Trusses

Improved safety with DSI Trusses Improved safety with DSI Trusses Improved safety with DSI Trusses Improved safety with DSI Trusses Improved safety with DSI Trusses Improved safety with DSI Trusses Improved safety with DSI Trusses…

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Construction of a New Import and Export Facility in Newcastle, NSW, Australia

Construction of a New Import and Export Facility in Newcastle, NSW, Australia Construction of a New Import and Export Facility in Newcastle, NSW, Australia Construction of a New Import and Export Facility in Newcastle, NSW, Australia…

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DSI Hollow Bars now produced in Pasching

DSI Hollow Bars now produced in Pasching DSI Hollow Bars now produced in Pasching DSI Hollow Bars now produced in Pasching DSI Hollow Bars now produced in Pasching DSI Hollow Bars now produced in Pasching Due to the increased demand…

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Immediate Measure using DSI Bar Anchors: Stabilization of a Rock Fall near Vorau

Immediate Measure using DSI Bar Anchors: Stabilization of a Rock Fall near Vorau Immediate Measure using DSI Bar Anchors: Stabilization of a Rock Fall near Vorau Immediate Measure using DSI Bar Anchors: Stabilization of a Rock Fall…

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The Øresund Link: Millennium Connection between Sweden and Denmark made possible with DSI Technology

The Øresund Link: Millennium Connection between Sweden and Denmark made possible with DSI Technology The Øresund Link: Millennium Connection between Sweden and Denmark made possible with DSI Technology The Øresund Link: Millennium…

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The Leeville Mine: DSI GRP Rock Bolts and DSI Inject Systems ensure Safety in Aggressive Environments

The Leeville Mine: DSI GRP Rock Bolts and DSI Inject Systems ensure Safety in Aggressive Environments The Leeville Mine: DSI GRP Rock Bolts and DSI Inject Systems ensure Safety in Aggressive Environments The Leeville Mine: DSI GRP Rock…

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Sydney Metro Pitt Street station project on track with the AT – Pipe Umbrella System

Sydney Metro Pitt Street station project on track with the AT – Pipe Umbrella System Sydney Metro Pitt Street station project on track with the AT – Pipe Umbrella System Sydney Metro Pitt Street station project on track with the AT –…

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DSI Anchors secure new Subway Tunnel

DSI Anchors secure new Subway Tunnel DSI Anchors secure new Subway Tunnel DSI Anchors secure new Subway Tunnel DSI Anchors secure new Subway Tunnel DSI Anchors secure new Subway Tunnel DSI Anchors secure new Subway Tunnel DSI Anchors…

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Efficient Connection from Munich to Garmisch-Partenkirchen: The new Oberau Tunnel

Efficient Connection from Munich to Garmisch-Partenkirchen: The new Oberau Tunnel Efficient Connection from Munich to Garmisch-Partenkirchen: The new Oberau Tunnel Efficient Connection from Munich to Garmisch-Partenkirchen: The new…

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Special Grout for Rock Consolidation: DSI Australia supplies the Pajingo Gold Mine with DSI Grout

Special Grout for Rock Consolidation: DSI Australia supplies the Pajingo Gold Mine with DSI Grout Special Grout for Rock Consolidation: DSI Australia supplies the Pajingo Gold Mine with DSI Grout Special Grout for Rock Consolidation:…

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DSI support the greatest tunneling site on earth

DSI support the greatest tunneling site on earth DSI support the greatest tunneling site on earth DSI support the greatest tunneling site on earth DSI support the greatest tunneling site on earth DSI support the greatest tunneling site…

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DSI Rock Bolts secure Tunnel for Mölltaler Glacier Express

DSI Rock Bolts secure Tunnel for Mölltaler Glacier Express DSI Rock Bolts secure Tunnel for Mölltaler Glacier Express DSI Rock Bolts secure Tunnel for Mölltaler Glacier Express The world's longest underground cable railway (length…

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Tunnel Segments joined with DSI Strand Tendons: The Øresund Crossing

Tunnel Segments joined with DSI Strand Tendons: The Øresund Crossing Tunnel Segments joined with DSI Strand Tendons: The Øresund Crossing Tunnel Segments joined with DSI Strand Tendons: The Øresund Crossing Sweden and Denmark will be…

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DSI-Anchors-and-AT-Pipe-Advance-Work-for-Algiers-Metro

DSI-Anchors-and-AT-Pipe-Advance-Work-for-Algiers-Metro DSI-Anchors-and-AT-Pipe-Advance-Work-for-Algiers-Metro DSI-Anchors-and-AT-Pipe-Advance-Work-for-Algiers-Metro DSI-Anchors-and-AT-Pipe-Advance-Work-for-Algiers-Metro…

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DSI Hollow Bar Anchors secure Eichelberg Tunnel

DSI Hollow Bar Anchors secure Eichelberg Tunnel DSI Hollow Bar Anchors secure Eichelberg Tunnel DSI Hollow Bar Anchors secure Eichelberg Tunnel DSI Hollow Bar Anchors secure Eichelberg Tunnel DSI Hollow Bar Anchors secure Eichelberg…

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DSI Hollow Bar Anchors ensure fast Site Development at the Borden Gold Mine in Canada

DSI Hollow Bar Anchors ensure fast Site Development at the Borden Gold Mine in Canada DSI Hollow Bar Anchors ensure fast Site Development at the Borden Gold Mine in Canada DSI Hollow Bar Anchors ensure fast Site Development at the…

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DSI Seal Waterproofing System protects Torrent Embankment following a Landslide

DSI Seal Waterproofing System protects Torrent Embankment following a Landslide DSI Seal Waterproofing System protects Torrent Embankment following a Landslide DSI Seal Waterproofing System protects Torrent Embankment following a…

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DSI Hollow Bars secure tunnel for ICE high speed railway

DSI Hollow Bars secure tunnel for ICE high speed railway DSI Hollow Bars secure tunnel for ICE high speed railway DSI Hollow Bars secure tunnel for ICE high speed railway DSI Hollow Bars secure tunnel for ICE high speed railway DSI…

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DSI Hollow Bars secure Greece's Egnatia freeway project

DSI Hollow Bars secure Greece's Egnatia freeway project DSI Hollow Bars secure Greece's Egnatia freeway project DSI Hollow Bars secure Greece's Egnatia freeway project DSI Hollow Bars secure Greece's Egnatia freeway project DSI Hollow…

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Valik Tunnel reinforced with DSI Bar Anchors

Valik Tunnel reinforced with DSI Bar Anchors Valik Tunnel reinforced with DSI Bar Anchors Valik Tunnel reinforced with DSI Bar Anchors Valik Tunnel reinforced with DSI Bar Anchors Valik Tunnel reinforced with DSI Bar Anchors Valik…

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DSI Hollow Bar meets new geological and geotechnical challenges

DSI Hollow Bar meets new geological and geotechnical challenges DSI Hollow Bar meets new geological and geotechnical challenges DSI Hollow Bar meets new geological and geotechnical challenges DSI Hollow Bar meets new geological and…

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The Hagen Residential Community in Linz: DSI Hollow Bar System stabilizes Excavation

The Hagen Residential Community in Linz: DSI Hollow Bar System stabilizes Excavation The Hagen Residential Community in Linz: DSI Hollow Bar System stabilizes Excavation The Hagen Residential Community in Linz: DSI Hollow Bar System…

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DSI Hollow Bars Stabilize Fault Zone of a Canadian Mine

DSI Hollow Bars Stabilize Fault Zone of a Canadian Mine DSI Hollow Bars Stabilize Fault Zone of a Canadian Mine DSI Hollow Bars Stabilize Fault Zone of a Canadian Mine DSI Hollow Bars Stabilize Fault Zone of a Canadian Mine DSI Hollow…

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Complete System Solution for Application in highly weathered Rock Mass: DSI Hollow Bar System for the Alejandría Hydropower Plant

Complete System Solution for Application in highly weathered Rock Mass: DSI Hollow Bar System for the Alejandría Hydropower Plant Complete System Solution for Application in highly weathered Rock Mass: DSI Hollow Bar System for the…

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DSI Hollow Bars and Lattice Girders secure Driving of the Sten Tunnel

DSI Hollow Bars and Lattice Girders secure Driving of the Sten Tunnel DSI Hollow Bars and Lattice Girders secure Driving of the Sten Tunnel DSI Hollow Bars and Lattice Girders secure Driving of the Sten Tunnel DSI Hollow Bars and…

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Use of the DSI Hollow Bar System for the Stabilization of Vijenac Tunnel

Use of the DSI Hollow Bar System for the Stabilization of Vijenac Tunnel Use of the DSI Hollow Bar System for the Stabilization of Vijenac Tunnel Use of the DSI Hollow Bar System for the Stabilization of Vijenac Tunnel Use of the DSI…

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The Loboguerrero Tunnel Chain: DSI Hollow Bar System ensures fast Construction Progress in difficult Ground

The Loboguerrero Tunnel Chain: DSI Hollow Bar System ensures fast Construction Progress in difficult Ground The Loboguerrero Tunnel Chain: DSI Hollow Bar System ensures fast Construction Progress in difficult Ground The Loboguerrero…

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DSI Tork Bolt

Dynamic Bolts & Products - DSI Tork Bolt Features Functions as both dynamic and static bolt Simplistic design Utilizes a patented mixing helix to achieve thorough resin mix Applicable as primary support Compatible with existing ground…

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DSI Tork Bolt

Speciality Bolts 1055 Modified Steel Elongation 10% 10% Yield Strength 448 MPa 93 kN 65.000psi 20,904 lb Ultimate Tensile Strenght  660 MPa 143 kN  65,700 psi 32,160 lb Recommended Domed Washer Plate 6.3 mm x 150 mm x 150 mm  1/4" x 6"…

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Threadbar Properties

Threadbar #6 (19mm) through #14 (44mm)  Dimensions #6 #7 #8 #10 #11 #14 Nominal Bar Size E 3/4" (19 mm) 7/8" (22 mm) 1" (25 mm) 1-1/4" (32 mm) 1-3/8" (35 mm) 1-3/4" (44 mm) Max. Bar Diam. F 0.86" (21.8 mm) 0.99" (25.1 mm) 1.12" (28.4…

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Threadbar Properties

Threadbar #6 (19mm) through #14 (44mm)  Dimensions #6 #7 #8 #10 #11 #14 Nominal Bar Size E 3/4" (19 mm) 7/8" (22 mm) 1" (25 mm) 1-1/4" (32 mm) 1-3/8" (35 mm) 1-3/4" (44 mm) Max. Bar Diam. F 0.86" (21.8 mm) 0.99" (25.1 mm) 1.12" (28.4…

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Threadbar Properties

Threadbar #6 (19mm) through #14 (44mm)  Dimensions #6 #7 #8 #10 #11 #14 Nominal Bar Size E 3/4" (19 mm) 7/8" (22 mm) 1" (25 mm) 1-1/4" (32 mm) 1-3/8" (35 mm) 1-3/4" (44 mm) Max. Bar Diam. F 0.86" (21.8 mm) 0.99" (25.1 mm) 1.12" (28.4…

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Threadbar Hardware

Black & Galvanized Hardware Hardware #6 #7 #8 #10 #11 #14 Anchornut stock stock stock  stock stock n/a Hex Nut - Cast stock stock stock stock stock n/a Hex Nut - Machined special order special order special order special order special…

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Threadbar Hardware

Black & Galvanized Hardware Hardware #6 #7 #8 #10 #11 #14 Anchornut stock stock stock  stock stock n/a Hex Nut - Cast stock stock stock stock stock n/a Hex Nut - Machined special order special order special order special order special…

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Threadbar Hardware

Black & Galvanized Hardware Hardware #6 #7 #8 #10 #11 #14 Anchornut stock stock stock  stock stock n/a Hex Nut - Cast stock stock stock stock stock n/a Hex Nut - Machined special order special order special order special order special…

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Threadbar Hardware

Black & Galvanized Hardware Hardware #6 #7 #8 #10 #11 #14 Anchornut stock stock stock  stock stock n/a Hex Nut - Cast stock stock stock stock stock n/a Hex Nut - Machined special order special order special order special order special…

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Meet our Team

Meet our Team Nicole Smith, Financial Analyst What makes working at DSI Underground special for you? Working at DSI Underground provides me with an opportunity for professional growth everyday through new challenges and opportunities.…

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Thames Tideway Tunnel, London: DSI Underground Supplies AT - Pipe Umbrella System with Innovative Squeezed Connection

Thames Tideway Tunnel, London: DSI Underground Supplies AT - Pipe Umbrella System with Innovative Squeezed Connection Thames Tideway Tunnel, London: DSI Underground Supplies AT - Pipe Umbrella System with Innovative Squeezed Connection…

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Kick-off at HS2 with groundbreaking forepoling technology

Kick-off at HS2 with groundbreaking forepoling technology Kick-off at HS2 with groundbreaking forepoling technology Kick-off at HS2 with groundbreaking forepoling technology Kick-off at HS2 with groundbreaking forepoling technology…

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Grouting systems support cross passages in Mexico City

Grouting systems support cross passages in Mexico City Grouting systems support cross passages in Mexico City Grouting systems support cross passages in Mexico City The Tren Interurbano railway line connects Toluca with the capital…

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The Cuiabá Mine: Very Deep Gold Mining with Ground Support Products by DSI Underground

The Cuiabá Mine: Very Deep Gold Mining with Ground Support Products by DSI Underground The Cuiabá Mine: Very Deep Gold Mining with Ground Support Products by DSI Underground The Cuiabá Mine: Very Deep Gold Mining with Ground Support…

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Threadbar Properties

Threadbar #6 (19mm) through #14 (44mm)  Dimensions #6 #7 #8 #10 #11 #14 Nominal Bar Size E 3/4" (19 mm) 7/8" (22 mm) 1" (25 mm) 1-1/4" (32 mm) 1-3/8" (35 mm) 1-3/4" (44 mm) Max. Bar Diam. F 0.86" (21.8 mm) 0.99" (25.1 mm) 1.12" (28.4…

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Contact

Further Information is requested about: Mining Mechanical Rockbolts, Extension Bolts, Stelpipe Bolts Rebar Rock Bolts Cable Bolts Friction Stabilizers & Expandable Bolts DSI UNDERGROUND threadbar® Trusses & Slings Specialty Bolts…

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Thank you

Thank You! Your feedback was sent to DSI Underground Canada. We will answer your request as soon as possible. Thank you for visiting our website!

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Threadbar Torque Tension Relationship

Threadbar Downloads more … Projects DSI Underground Image Trailer

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Safe Underground Impermeabilization: DSI Underground supplies Mineral Bond Silicate Resin to the Frasers Mine

Safe Underground Impermeabilization: DSI Underground supplies Mineral Bond Silicate Resin to the Frasers Mine Safe Underground Impermeabilization: DSI Underground supplies Mineral Bond Silicate Resin to the Frasers Mine Safe…

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The St. Kanzian Tunnel Chain: DSI Underground supplies AT – Pipe Umbrella Support Systems with efficient Squeezed Connection

The St. Kanzian Tunnel Chain: DSI Underground supplies AT – Pipe Umbrella Support Systems with efficient Squeezed Connection The St. Kanzian Tunnel Chain: DSI Underground supplies AT – Pipe Umbrella Support Systems with efficient…

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Application Test of Injection Resins at the Soma Eynez/Demir Mine, Turkey

Application Test of Injection Resins at the Soma Eynez/Demir Mine, Turkey Application Test of Injection Resins at the Soma Eynez/Demir Mine, Turkey Application Test of Injection Resins at the Soma Eynez/Demir Mine, Turkey Application…

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DSI Underground supplies Ground Support Products and Injection Resins to the Polyak Eynez Mine, Turkey

DSI Underground supplies Ground Support Products and Injection Resins to the Polyak Eynez Mine, Turkey DSI Underground supplies Ground Support Products and Injection Resins to the Polyak Eynez Mine, Turkey DSI Underground supplies…

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DSI Underground supplies high quality Ground Support Products for the Minera El Roble Mine in Mexico

DSI Underground supplies high quality Ground Support Products for the Minera El Roble Mine in Mexico DSI Underground supplies high quality Ground Support Products for the Minera El Roble Mine in Mexico DSI Underground supplies high…

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Investing in the Future: Expanding Friction Bolt Production Capacity in Canada

Investing in the Future: Expanding Friction Bolt Production Capacity in Canada Investing in the Future: Expanding Friction Bolt Production Capacity in Canada Investing in the Future: Expanding Friction Bolt Production Capacity in…

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Careers

Your Career at DSI Underground: Join the DSI Underground Family and become member of a world class team. What we offer As a global group, we offer our employees an international environment and exposure to renowned projects and…

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ALWAG Systems Stabilize Austria’s longest Railway Tunnel

ALWAG Systems Stabilize Austria’s longest Railway Tunnel ALWAG Systems Stabilize Austria’s longest Railway Tunnel ALWAG Systems Stabilize Austria’s longest Railway Tunnel ALWAG Systems Stabilize Austria’s longest Railway Tunnel ALWAG…

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The Semmering Base Tunnel: Safe Tunneling at the Froeschnitzgraben using DSI Underground’s Support Products

The Semmering Base Tunnel: Safe Tunneling at the Froeschnitzgraben using DSI Underground’s Support Products The Semmering Base Tunnel: Safe Tunneling at the Froeschnitzgraben using DSI Underground’s Support Products The Semmering Base…

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Mission and Values

Experienced, passionate, committed We are mining and tunneling experts. As individuals, teams and a business, we are passionate about driving progress underground and helping our customers work faster, smarter, and more safely and…

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News

DSI Underground has acquired 100% of Mansour in October 2019. Since October 2019, the combined team of DSI Underground and Mansour continue providing you with the usual high-quality products and excellent service. Beyond that, you will…

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Exhibitions

Exhibitions and Conferences Event Place Date XVI Seminario Andino de Túneles y Obras Subterráneas Medellin, Colombia October 13-15, 2021 Geomechanik Kolloquium 2021 Salzburg, Austria & Virtual October 14-16, 2021 Acapulco International…

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Application Form

Your Career at DSI Underground Your data will be internally forwarded to our local units to check out jobs that meet your qualifications and interests. Information * Application for * Province Country * Personal Data Title Family Name…

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DSI Underground CEO Commitment

DSI Underground CEO Commitment Michael Reich DSI Underground CEO Helping you achieve your objectives – quickly, safely and sustainably . The work you do is vital and helps advance human progress. At the same time, we understand the…

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Tauern Tunnel’s Second Tube Completely Driven and Secured using DSI Tunnel Solution Systems

Tauern Tunnel’s Second Tube Completely Driven and Secured using DSI Tunnel Solution Systems Tauern Tunnel’s Second Tube Completely Driven and Secured using DSI Tunnel Solution Systems Tauern Tunnel’s Second Tube Completely Driven and…

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DSI develops innovative Manx Bolt for the Beltana Coal Mine in New South Wales

DSI develops innovative Manx Bolt for the Beltana Coal Mine in New South Wales DSI develops innovative Manx Bolt for the Beltana Coal Mine in New South Wales DSI develops innovative Manx Bolt for the Beltana Coal Mine in New South…

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DSI Mining Products Secure Underground Observatory in Canada

DSI Mining Products Secure Underground Observatory in Canada DSI Mining Products Secure Underground Observatory in Canada DSI Mining Products Secure Underground Observatory in Canada DSI Mining Products Secure Underground Observatory…

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DSI Fiberglass Rebars secure gold mine in Canada

DSI Fiberglass Rebars secure gold mine in Canada DSI Fiberglass Rebars secure gold mine in Canada DSI Fiberglass Rebars secure gold mine in Canada DSI Fiberglass Rebars secure gold mine in Canada DSI Fiberglass Rebars secure gold mine…

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New High Speed Railway Section with threadbar® Plus Micropiles: Extension of the Nordbahn near Vienna

New High Speed Railway Section with threadbar® Plus Micropiles: Extension of the Nordbahn near Vienna New High Speed Railway Section with threadbar® Plus Micropiles: Extension of the Nordbahn near Vienna New High Speed Railway Section…

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Cerro Vanguardia, Province Santa Cruz Argentina

Cerro Vanguardia, Province Santa Cruz Argentina Cerro Vanguardia, Province Santa Cruz Argentina Cerro Vanguardia, Province Santa Cruz Argentina Cerro Vanguardia, Province Santa Cruz Argentina Cerro Vanguardia, Province Santa Cruz…

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New Delivery Contracts for Coal Mines in the Appalachian Mountains

New Delivery Contracts for Coal Mines in the Appalachian Mountains New Delivery Contracts for Coal Mines in the Appalachian Mountains New Delivery Contracts for Coal Mines in the Appalachian Mountains Coal mines of the James River Coal…

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New service tunnel extended using steel liner plates and innovative grout pumps supplied by DSI Underground

New service tunnel extended using steel liner plates and innovative grout pumps supplied by DSI Underground New service tunnel extended using steel liner plates and innovative grout pumps supplied by DSI Underground New service tunnel…

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Extension of the underground line from Ládvi to Letnany in Prague

Extension of the underground line from Ládvi to Letnany in Prague Extension of the underground line from Ládvi to Letnany in Prague Extension of the underground line from Ládvi to Letnany in Prague Extension of the underground line…

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Reinforcement and Support Systems for Construction of Lainzer Tunnel in Vienna

Reinforcement and Support Systems for Construction of Lainzer Tunnel in Vienna Reinforcement and Support Systems for Construction of Lainzer Tunnel in Vienna Reinforcement and Support Systems for Construction of Lainzer Tunnel in…

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Mining for oil

Mining for oil Mining for oil Mining for oil Mining for oil Mining for oil Mining for oil Mining for oil Mining for oil Mining for oil Mining for oil Mining for oil Greybull Petroleum, Greybull, WY, USA The method of collecting oil…

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DSI Australia supply ground support products to Kazakhstan

DSI Australia supply ground support products to Kazakhstan DSI Australia supply ground support products to Kazakhstan DSI Australia supply ground support products to Kazakhstan DSI Australia supply ground support products to Kazakhstan…

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Corroded Mining Elements replaced with Double Corrosion Protected DSI Rock Bolts

Corroded Mining Elements replaced with Double Corrosion Protected DSI Rock Bolts Corroded Mining Elements replaced with Double Corrosion Protected DSI Rock Bolts Corroded Mining Elements replaced with Double Corrosion Protected DSI…

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DSI Australia assists with the expansion of PT Freeport Indonesia

DSI Australia assists with the expansion of PT Freeport Indonesia DSI Australia assists with the expansion of PT Freeport Indonesia DSI Australia assists with the expansion of PT Freeport Indonesia DSI Australia assists with the…

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First-time delivery of DSI Australia mining products to Turkey

First-time delivery of DSI Australia mining products to Turkey First-time delivery of DSI Australia mining products to Turkey First-time delivery of DSI Australia mining products to Turkey First-time delivery of DSI Australia mining…

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First application of OMEGA Bolts in Australia

First application of OMEGA Bolts in Australia First application of OMEGA Bolts in Australia First application of OMEGA Bolts in Australia First application of OMEGA Bolts in Australia First application of OMEGA Bolts in Australia The…

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Koralm Railway Tunnel, Exploratory Tunnel Paierdorf, Austria

Koralm Railway Tunnel, Exploratory Tunnel Paierdorf, Austria Koralm Railway Tunnel, Exploratory Tunnel Paierdorf, Austria Koralm Railway Tunnel, Exploratory Tunnel Paierdorf, Austria Koralm Railway Tunnel, Exploratory Tunnel Paierdorf,…

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Avoiding Traffic Jams with ALWAG Systems: New Tram Line in Linz

Avoiding Traffic Jams with ALWAG Systems: New Tram Line in Linz Avoiding Traffic Jams with ALWAG Systems: New Tram Line in Linz Avoiding Traffic Jams with ALWAG Systems: New Tram Line in Linz Avoiding Traffic Jams with ALWAG Systems:…

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The North West Rail Link in Sydney: DSI supplies Quality Products for fully-automated Rapid Transit Rail System

The North West Rail Link in Sydney: DSI supplies Quality Products for fully-automated Rapid Transit Rail System The North West Rail Link in Sydney: DSI supplies Quality Products for fully-automated Rapid Transit Rail System The North…

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Mexico: OMEGA-BOLT® Technology for Precious Metal Mine of International Standing

Mexico: OMEGA-BOLT® Technology for Precious Metal Mine of International Standing Mexico: OMEGA-BOLT® Technology for Precious Metal Mine of International Standing Mexico: OMEGA-BOLT® Technology for Precious Metal Mine of International…

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ALWAG Systems for the M6 in Hungary

ALWAG Systems for the M6 in Hungary ALWAG Systems for the M6 in Hungary ALWAG Systems for the M6 in Hungary ALWAG Systems for the M6 in Hungary ALWAG Systems for the M6 in Hungary ALWAG Systems for the M6 in Hungary ALWAG Systems for…

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Safe Deep Mining with DSI Products: Turquoise Ridge Mine

Safe Deep Mining with DSI Products: Turquoise Ridge Mine Safe Deep Mining with DSI Products: Turquoise Ridge Mine Safe Deep Mining with DSI Products: Turquoise Ridge Mine Safe Deep Mining with DSI Products: Turquoise Ridge Mine Safe…

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Successful Technical Cooperation Leads to Supply Contract for Mining Products

Successful Technical Cooperation Leads to Supply Contract for Mining Products Successful Technical Cooperation Leads to Supply Contract for Mining Products Successful Technical Cooperation Leads to Supply Contract for Mining Products…

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DSI Mining Canada optimizes Operations

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John Hart Generating Station Replacement Project: System Solutions for difficult Ground Conditions in an Access Tunnel

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Innovations in Mining: DSI Underground develops efficient Cable Bolt Systems

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BULLFLEX® Support Pillars prove their Load-Bearing Capacity: Successful Tests at the NIOSH Laboratory

BULLFLEX® Support Pillars prove their Load-Bearing Capacity: Successful Tests at the NIOSH Laboratory BULLFLEX® Support Pillars prove their Load-Bearing Capacity: Successful Tests at the NIOSH Laboratory BULLFLEX® Support Pillars prove…

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DSI Provides High Quality Mining Products for Australian Exploration Adit

DSI Provides High Quality Mining Products for Australian Exploration Adit DSI Provides High Quality Mining Products for Australian Exploration Adit DSI Provides High Quality Mining Products for Australian Exploration Adit DSI Provides…

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Steel Ribs

Cold Formed Steel Ribs Continuously Threaded Bars DSI Underground has cold-formed beams for underground supports for over 75 years. Techniques that we have learned about shaping steel for strength, performance, and value in the world's…

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The Klokova Tunnel: Ground Support Products by DSI Underground for Greece’s new North-South Connection

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Installation Accessories

Friction Stabilizers Plate Washers minimum A-36 material (36,000 psi yield) A = 6” square B = FS-33 & FS-39: 3/16” thick; FS-46: 1/4" thick C = FS-33: 36mm (1-7/16”) diameter        FS-39: 41mm (1-5/8”) diameter        FS-46: 48mm…

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Friction Stabilizers

Friction Bolt Nominal Sizes 33mm, 39mm and 46mm   Dimensions FS-33 FS-39 FS-46 Taper Diameter A 1-1/8" (28 mm) 1-3/16" (30 mm) 1-1/2" (38 mm) Taper Length B 2-3/8" (60 mm) 2-1/2" (65 mm) 2-1/2" (65 mm) Slot Width C 1/2" (13 mm) 5/8"…

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The Klaus Tunnel Chain: DSI Ground Support Products stabilize Excavation of the new Eastern Tubes

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Flexible Energy Generation: DSI supplies Ground Support Products for Obervermuntwerk II at a Height of 1,700m

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The OneStep Mining Bolt: A Premium Ground Support Product for individual Requirements

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Major Orders of more than € 46 Million in Tunneling for DSI Underground Austria

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Delivering Ground Support Cost Efficiencies: The DSI-PEAK Resin Bolting System

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CORE-LUBE

Core Tube Lubricant Description CORE-LUBE is a natural, linseed-based soft soap used as a core tube lubricant on diamond core drills. Applications/Functions Facilitate the core sliding into the inner tube Lubricate the core lifter…

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MGSD Bar

Hybrid Size Bar The new DSI Underground hybrid size bar to allow easier insertion through resin and better resin mixing. Size Grade Yield min. Yield max. Tensile min. Tensile max. Elongation "A" diameter "A" aim "C" nominal "C"…

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Installation Quality Guidelines

Tools & Hardware Rebar and threadbar® Bolts Hole diameters (inches) Hole diameters (inches) Hole diameters (inches) Hole diameters (inches) Hole diameters (inches) Hole diameters (inches) Hole diameters (inches) Hole diameters (inches)…

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Installation Quality Guidelines

Tools & Hardware Rebar and threadbar® Bolts Hole diameters (inches) Hole diameters (inches) Hole diameters (inches) Hole diameters (inches) Hole diameters (inches) Hole diameters (inches) Hole diameters (inches) Hole diameters (inches)…

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General

threadbar® System Rock and Soil Anchors System Description DSI Underground was a pioneer in the development of rock and soil anchor systems and technology for the Tunneling and Mining Industry. Today DSI Underground is a world leader…

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QUIK-GEL GOLD

Viscosifier Description QUIK-GEL GOLD high-yield viscosifier is a selectively mined, premium sodium bentonite designed for water well, minerals exploration and other industrial drilling applications. QUIK-GEL GOLD high-yield…

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Requirements

Lattice Girders - 3 Bar / 4 Bar General Requirements 1. All lattice girders shall consist of three or four primary retaining bars connected by stiffening elements of the manufacturer's design. The lattice girder will be designed to…

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Support Types

Steel Rib Support Types DSI Underground can bend I, WF, H sections ranging from 4" to 27" in depth (DSI Underground has formed W14x287 lb ft with 2" flanges). Curvatures range from a minimum radius of 10 times the beam depth for 4" and…

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HOLEPLUG®

Amounts Application Amounts of HOLEPLUG® Required for Plugging Hole Diameter  (inches) Hole Volume  (ft 3 /ft) Pounds HOLEPLUG®  Needed to Fill One Foot Feet Filled by One Bag HOLEPLUG® Bags HOLEPLUG®  Needed to Fill 100 ft 2 0.022 1.6…

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POLY-BORE

Borehole Stabilizing Dry Polymer Description POLY-BORE is a free flowing, water-soluble, easy mixing, 100% dry granular polymer. POLY-BORE is a very high molecular weight partially hydrolyzed polyacrylamide (PHPA) polymer. When mixed…

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EZ-MUD® PLUS

Polymer Emulsion Description EZ-MUD PLUS is a high molecular weight version of EZ-MUD with improved properties. EZ-MUD PLUS, a liquid polymer emulsion containing partially hydrolyzed polyacrylamide/polyacrylate (PHPA) copolymer, is…

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QUIK-GEL®

Viscosifier Description QUIK-GEL® is an easy-to-mix, finely ground (200-mesh), premium-grade, high-yielding Wyoming sodium bentonite. QUIK-GEL® imparts viscosity, fluid loss control and gelling characteristics to freshwater-based…

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EZ-MUD® DP

Borehole Stabilizing Dry Polymer Description EZ-MUD DP is a free-flowing, dry granular synthetic polymer containing partially hydrolyzed polyacrylamide/ polyacrylate (PHPA) copolymer. EZ-MUD DP, a water-soluble polymer, disperses and…

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Margo Type Plugs

Margo Plugs - to seal drill holes tightening the nut expands the rubber sleeves plug is hollow for drainage ball valve (sold separately) may be threaded onto end Product No. Hole Diameter Pipe Size 18" 24" 36" 48" 60" 72" 84" 96" 108"…

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PENETROL®

Wetting Agent Description PENETROL, a water miscible, non-ionic wetting agent, is designed to counteract the sticking tendencies of clay. Applications/Functions Reduce or eliminate bit balling Reduce surface tension of drilling fluid,…

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Drill Hole Safety Plug

Safety Plug Product Number Drill Hole Size Item P-125 XRP Safety Plug P-138 1-3/8" Safety Plug P-150 EX Safety Plug P-175 1-3/4" Safety Plug P-187 AQ Safety Plug P-200 2" Safety Plug P-212 2-1/8" Safety Plug P-238 BQ Safety Plug P-300…

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Steel 4-Flange Liner Plates

Lattice Girders, Steel Arches & Props DSI Underground Canada selection of underground supports, the widest in the world, affords the contractor, the designer, and the owner a matchless combination of high performance and tunneling at…

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4 bar type

Lattice Girders, Steel Arches & Props Lattice Girder Bar Material: Tensile Strength 80ksi (550 MPa) min. Yield Strength 70ksi (480 MPa) min. Elongation 10% Minimum Connecting Bolts: ASTM A 325N Ø3/4"minimum O.P. Type 0 [mm] S Bar Size…

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Typical Liner Plate Installations

Lattice Girders, Steel Arches & Props Three basic ways sof installing plates in tunnels or shafts are illustrated here; each has its advantage in a particular application or ground condition. Liner Plates Only The most obvious…

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VK Grout Plugs - Type A

VK Grout Plugs Product No. Hole Diameter Pipe Size 13" 17" 21" 24" 30" 36" 48" 60" 72" 84" 96" A125L-A125R 1-1/4" 1/2" x - - x - x x x x x x A138L-A138R 1-3/8" 1/2" x - - x - x x x x x x A150L-A150R 1-1/2" EX 1/2" x - - x - x x x x x x…

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Accessories Used with Ribs

Lattice Girders, Steel Arches & Props Butt Joint Butt plate height: Rib Depth plus 1" Width: Flange width plus 1" Thickness: 4" and 5” sections – 3/8" 6" sections – 1/2" 8" sections – 5/8" 10” sections – 3/4" 12" sections – 1" Bolt…

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Steel Rib supports

Lattice Girders, Steel Arches & Props *Other variations available on request. DSI Underground Canada Ltd. can bend I, WF, H sections ranging from 4" to 27" in depth (DSI Underground has formed W14x287 lb ft with 2" flanges). Curvatures…

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Mastercast and Traditional Overcasts

Lattice Girders, Steel Arches & Props Mastercast Rapid Assembly as few as six major pieces All sizes available in 12 inch increments Reusable and galvanized panels Chanel ends for wingwalls Light and Heavy Duty versions Ships complete…

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Adjustable Support Jacks

Lattice Girders, Steel Arches & Props FastJax 12" Adjustable Tops 100 Ton Yield Strength Available in 6" increments from 4' to 9' high Can be fitted with yieldable dish, yolk to suit box beam or flat plate top No loose pieces or grout…

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Bearing Plates (washers)

Bearing Plates Flat Plate - for general use minimum A-36 material (36,000 psi yield) A = 4” to 12” square B = 1/8” to 1-1/2” thick C = hole diameter as required bent corner, grout slots & keyholes available Domed Plate - use with…

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Butterfly Plate

Grade rated plates Length x Width Thickness Hole Diameter Net weight black Net weight galv. 300 x 278mm 12 x 11inch 1.9 mm 50 mm = 2 inch 2.87 lbs 2.95 lbs 400 x 278mm 15.75 x 11inch 1.9 mm 50 mm = 2 inch 3.73 lbs 3.83 lbs Product…

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Shotcrete (Spider) Plate (Black and Galvanized)

Shotcrete Plate Dimensions Center Hole Form Weight 5" x 5" x 1/4" 1.2" Flat 4.5 lbs 6" x 6" x 1/4" 1.2" Flat 6.4 lbs 5" x 5" x 3/8" 1.2" Flat 9.6 lbs Custom sizes available upon request Description DSI Underground shotcrete anchor…

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Keyhole Brackets

Eyebolts, Scaling Bars & Utility Hangers Keyhole Brackets Service Line Keyhole Brackets are used in conjunction with service line slots, which are pre-punched in W-Strap vee’s. The Keyhole Brackets are used for suspension of light mine…

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Scaling Bars

Eyebolts, Scaling Bars & Utility Hangers Hexagonal Solid Steel AISI 1080 or equivalent steel T = 7/8” hex (3/4” special order) weight = 2.3 lbs/ft angle chisel on one end moil point (shown) or end straight chisel on other end optional…

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Utility Hangers

Eyebolts, Scaling Bars & Utility Hangers Pipehanger (J-Bolt) - for 3/16" chain or 1/4" chain 1060 material (100,000 psi) E = Ø 9/16" L = 18" and 24" overall rated for 2,000 lbs Bullhorn - square timber support 44W material (60,000 psi)…

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Surface Control Plates

Mesh, Straps & Plate Washers - Surface Control Plates 23" and 19" General Information the 23" diameter is "special" order the 19" diameter is stock production all plates have the "rolled edge" to provide for safe handling large…

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Drilling Consumables

Tools & Hardware, Drilling Consumables Drill Rods   For dry drilling – fabricated scroll or twisted scalloped type pinned or threaded joints available different drive ends to suit bolter ( 7/8" hex, square drive, etc)   Drill Bits…

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Cement Cartridges

Non-shrink cementitious anchor grout Uses Cement cartridges were developed to anchor mine and tunnel rock bolts (rebar and threadbar) and to anchor steel dowels in concrete. Advantages Convenient easy to handle cartridge form Fast…

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Polymesh

Polyester Mesh DSI Underground Grades tensile strength (ASTM-D4595) tensile strength (ASTM-D4595) tensile strength (ASTM-D4595) tensile strength (ASTM-D4595) tensile strength (ASTM-D4595) minimum aperture size weight (ASTM-D5261) All…

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Polymer Mining Grid

Polymer Grid Physical Characteristics Test Methods Data Structure Bi-Oriented Geogrids Mesh Type Rectangular Apertures Standard Color White Polymer Type Polypropylene Carbon Black Content ASTM D4218 No Flame Retardant ISO 9705 Yes…

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Shotcrete Mesh Panels

Mesh Shotcrete Mesh Panels are constructed with black or galvanized mesh and burlap cloth. Stiffeners are incorporated for three-dimensionable stability. The panels can be various sizes depending on application. They are lightweight…

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Mesh

Mesh, Straps & Plate Washers Welded Wire Mesh to ASTM A185 specifications wire to ASTM A82 specs (75,000 psi tensile) minimum weld shear strength (lbs) = 35,000 x wire cross sectional area (in 2 ) ends flush cut for safer handling…

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Formed Mesh

Mesh, Straps & Plate Washers - Formed Mesh Mesh Channels For construction of shotcrete barricades and fill fences mesh to ASTM A185 specifications wire strand to ASTM A82 specifications (75,000 psi tensile minimum) minimum weld shear…

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Straps (Mats)

Straps W-Strap (Mat) T = 12, 14, 16 gauge W = 5” to 13” L = 54” to 240” C = hole size/spacing to customer specs Rock Bolt Strap A36 material (36,000 psi yield) T = 12 gauge to  1/4” W= 4” to 8” L = 48” to 120” C = hole/slot…

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Gun Quip Wall & Support System

Support System Shotcrete panel ventilation walls - temporary or permanent. fireproof underground work shops and offices. provides rock support with rock bolt installation protective reinforcing around elevators and shafts. extra…

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Roof Channel

Mesh, Straps & Plate Washers Roof Channel 2 material grades - A36 and 65000psi minimum yield Length and hole spacing - to customer specifications Width - nominal 5-1/2 inches Thickness T-2 - minimum 0.100 inch T-3 - minimum 0.125 inch…

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Installation Quality Guidelines

Tools & Hardware Rebar and threadbar® Bolts Hole diameters (inches) Hole diameters (inches) Hole diameters (inches) Hole diameters (inches) Hole diameters (inches) Hole diameters (inches) Hole diameters (inches) Hole diameters (inches)…

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Liner Plates

General Requirements for Liner Plates DSI Underground's selection of underground supports, the widest in the world, affords the contractor, the designer, and the owner a matchless combination of high performance and tunneling at low…

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Fibreglass Dowel

Threaded & Ribbed FRP Dowels Fibreglass Dowel Fully Formed Physical Properties 12.5 Tonne Dowel 15 Tonne Dowel 20 Tonne Dowel 30 Tonne Dowel 38 Tonne Dowel Ultimate Tensile Strength 125 kN 150 kN 200 kN 300 kN 380 kN Nut/Thread Tensile…

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Cable Slings

Trusses & Slings Cable Length and Spacing Distance Between Holes Drill Hole Length Total Length of Cable 11.5' (3.5 m) 8' (2.4 m) 27.5' (8.3 m) 13.1' (4.0 m) 8' (2.4 m) 29.1' (8.8 m) 14.8' (4.5 m) 8' (2.4 m) 30.8' (9.3 m) 16.4' (5.0 m)…

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All Thread Rebar

Grade 690 Rebar Nominal 5/8" (15 mm) through 1-1/4" (32 mm) Dimensions #5 #6 #7 #8 #10 Nominal Diameter E 5/8 ” (15 mm) 3/4” (19 mm) 7/8” (22 mm) 1” (25 mm) 1-1/4” (32 mm) Thread Diameter F  3/4” (19.0 mm) 7/8” (22.2 mm) 1” (25.4 mm)…

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Trusses and Slings

Trusses & Slings Bar Sling Full Load Truss coupler Torque wrench to tension truss at coupler Patented in US and Canada Cable Truss Full load "dog-bone" coupler Hydraulic jack to tension Ring-eye plate or wood at bends to transfer…

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Omega Pump

OMEGA-BOLT® Inlet Air Pressure Range Outlet water psi 70 to 100 psi 280 to 300 bar (4060 to 4350 psi) Downloads more … Projects DSI Underground Image Trailer

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HI-TEN Strand Bolt

Cable Bolts Physical Properties Yield Strength 108,000 lbs Ultimate Tensile Strength 124,000 lbs Uniform Elongation 3-4% Mass Per ft 1.90lb Cable (Strand) Diameter 0.9" General Features The DSI Underground HI-TEN Strand Bolt is a cable…

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Applications

Lattice Girders - 3 Bar / 4 Bar Lattice Girders used in combination with shotcrete support DSI Underground has been a leader in the development and manufacturing of underground support systems for over 80 years and has been producing…

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Operating Procedure

For intensified cable truss tensioner Ensure that all hydraulic fittings are tightened before operation, and that the unit is in good working order. Check the following: There are no major dents in the housing. That the autogripper…

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OMEGA-BOLT® Coatings

Custom Protective Coatings In general, regular expandable rock bolts are not resistant to corrosive environments. To alleviate this problem in mining and tunneling applications, DSI Underground is using a special coating that isolates…

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OMEGA-BOLT®

OMEGA-BOLT® Friction Stabilizer Physical Properties 12 Tonnes Standard 12 Tonnes Plus 16 Tonnes Plus 24 Tonnes Standard 24 Tonnes Plus Minimum Breaking Load (kN) 120 115 150 240 220 Minimum Elongation 10% 20% 20% 10% 20% Profile…

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Cable Tensioner Mark2

For tensioning cables and installing plates Specifications A light weight and unique way for pre-loading cable bolts, the DSI Underground Cable Tensioner Mark2 grips the end of the cable bolt and tensions it, leaving only a short tail…

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Wedge Anchorage

Cable Bolts The Wedge Anchorage of the Cable Bolt The anchorage of most cable bolts consists of a wedge barrel and a 2- or 3-part wedge. The wedge segments grip the cable by means of tooth shaped threads which are forced into the…

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Torque Tension Relationship for CB1-1

Cable Jack with 3.4:1 Intensifier Specifications for 0.6" (15.2 mm) or 0.7" (17.8 mm) cable bolts stroke = 3" (75 mm) double acting hollow core ram aluminum construction - weighs only 10 lbs (4.5 kg) requires double acting hydraulic…

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Wallplate Beams

Lattice Girders - 3 Bar / 4 Bar Wallplate Beams - Lattice Girders remain as reinforcement The 4-Bar Girders are also used as longitudinal wall plates for heading and bench advances. They serve as bases and fixed points for the height…

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Installation Accessories

Cable Bolts End Holding Device - conventional style to hold cable bolt prior to grouting 2 straps 3/4” x 2-2/3” (19 mm x 70 mm) suitable for 2” (51 mm) to 2.5” (64 mm) hole can be ordered separately and site installed  if factory…

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Cable Bolt

Passive and Tensionable Cable Bolts tensionable passive Bond Head at end to fit specific Hole diameter 0.6" or 0.7" Passive and Tensionable Cable Diameter 0.6" gr270 0.7" gr270 Weight 0.74 lbs/ft 1.11 lbs/ft Bore Hole Diameter 1" to…

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Advantages / Fabrication

Lattice Girders 3 Bar / 4 Bar Advantages Advantages with the use of Lattice Girders Lattice girders provide the following advantages: Immediate roof support over the excavated section. Act as a template assuring a minimum thickness…

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Posimix Resin Bolt System

Posimix Bolt General Features Manufacture of the "posimix" bolt is the addition of a specially designed spring wire attached to the up hole end of many of DSI Underground rock bolts. The "posimix" bolting system was designed to assist…

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CBJ-1 Tensioning Jack

Plain Cable Bolt For installation of bearing plates Specifications for 0.6" (15.2 mm) or 0.7" (17.8 mm) cable bolts maximum load 25 ton @ 10,000 psi (225 kN @ 70 MPa) stroke = 3" (75 mm) double acting hollow core ram aluminum…

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Tension Jack/Pull Test Kit

30 Ton Capacity Test Kit General Features The pull test kit consists of two assemblies: a mechanical assembly which includes a claw, stand, nut, & spindle a hydraulic assembly which includes a hollow core ram, hand pump, gauge, & hose…

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D-Dome Rebar Rockbolts

Regular head for comparison  #7 (22m) and #8 (25m) D-Dome head for comparison Dimensions and Regulatory Requirements see Rebar Rockbolts page for size and regulatory requirement characteristics of D-Dome Rebar Rockbolts Technical…

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Installation Quality Guidelines

Mechanical Rock Bolts The following are items to be aware of when installing mechanical rock bolts (forged head and threaded both end [TBE] bolts): Type of Ground  - The nature of the ground must be evaluated. Soft strata requires a…

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Installation Quality Guidelines

Tools & Hardware Rebar and threadbar® Bolts Hole diameters (inches) Hole diameters (inches) Hole diameters (inches) Hole diameters (inches) Hole diameters (inches) Hole diameters (inches) Hole diameters (inches) Hole diameters (inches)…

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Ethics & Compliance

Our DSI Underground Spirit DSI Underground is known all around the world not only as a market leader in its industry, but also as a strong and reliable business partner, supplier, and employer. The key to our success is that we have…

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Installation Accessories

Rebar Rock Bolts Nuts Domenuts for 3/4” thread A.F. = 1-1/8” square for 7/8” thread A.F. = 1-1/8” square for 1” thread A.F. = 1-5/8” hex Plain Nuts - used with pinched thread for 3/4” thread A.F. = 1-1/8” square for 7/8” thread A.F. =…

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Installation Accessories

Mechanical Rock Bolts Expansion Shells for 5/8" & 3/4" UNC threads & 7/8" where applicable Ø = 1-1/32" (26 mm) hole size: model F1F, L = 3-1/4" Ø = 1-1/4" (32 mm) hole size: model F1-1/4B, L = 3-1/4" Ø = 1-3/8" (35 mm) hole size: model…

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Support Types

Steel Rib Support Types DSI Underground can bend I, WF, H sections ranging from 4" to 27" in depth (DSI Underground has formed W14x287 lb ft with 2" flanges). Curvatures range from a minimum radius of 10 times the beam depth for 4" and…

more …

Liner Plates

General Requirements for Liner Plates DSI Underground's selection of underground supports, the widest in the world, affords the contractor, the designer, and the owner a matchless combination of high performance and tunneling at low…

more …

Requirements

Lattice Girders - 3 Bar / 4 Bar General Requirements 1. All lattice girders shall consist of three or four primary retaining bars connected by stiffening elements of the manufacturer's design. The lattice girder will be designed to…

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Applications

Lattice Girders - 3 Bar / 4 Bar Lattice Girders used in combination with shotcrete support DSI Underground has been a leader in the development and manufacturing of underground support systems for over 80 years and has been producing…

more …

Wallplate Beams

Lattice Girders - 3 Bar / 4 Bar Wallplate Beams - Lattice Girders remain as reinforcement The 4-Bar Girders are also used as longitudinal wall plates for heading and bench advances. They serve as bases and fixed points for the height…

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Privacy Statement

1. An overview of data protection: General The following statements provide a simple overview of what happens to your personal information when you visit our website. Personal information is any kind of data with which you could be…

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General

threadbar® System Rock and Soil Anchors System Description DSI Underground was a pioneer in the development of rock and soil anchor systems and technology for the Tunneling and Mining Industry. Today DSI Underground is a world leader…

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Mechanical Rock Bolts

Forged Head (1-1/8" Square) Forged Head & Threaded Nominal 5/8" and 3/4" sizes and 7/8" Dimensions Head Type 5/8" Bolt 3/4" Bolt 7/8" Bolt Body Diameter E All bolts ±0.56" (±14.2mm) ±0.68" (±17.3mm) ±0.79" (±20.1mm) Head Across Flats F…

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Advantages / Fabrication

Lattice Girders 3 Bar / 4 Bar Advantages Advantages with the use of Lattice Girders Lattice girders provide the following advantages: Immediate roof support over the excavated section. Act as a template assuring a minimum thickness…

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CT-Bolt Combination Rock Bolt

Anchors, Rock Bolts & Pre-Support The CT-Bolt is a unique combination rock bolt system. It offers the combined advantages of an immediate point anchorage and subsequently a fully grouted rock bolt. A two-step installation procedure…

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Steel Lagging

Steel Support Interlocking Lagging Load Capacities in P.S.F. Rib Spacing 8 GA. 12 GA. 3'-0' C/C 1236 843 4'-0' C/C 695 474 5'-0' C/C 445 303 "C" Lagging Load Capacities in P.S.F. Rib Spacing 8 GA. 10 GA. 16 GA. 3'-0' C/C 2895 2391 1876…

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Server Error (404 - File not found)

Unfortunately, the page you requested is not available on the DSI Underground server. Please select from similar pages: Please select one of the following websites in order to continue your visit. Local DSI Underground websites for all…

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Locations

DSI Underground Worldwide DSI Underground develops, produces and supplies high quality products and systems for Underground Mining and Tunneling in more than 45 countries and in regional manufacturing sites. With our DSI Underground…

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Terms of Use

Terms of Use Please read before using this website. By using the DSI International Luxembourg SARL website, you agree to the following terms of use. If you do not agree with these terms, promptly discontinue use of this website and do…

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3 Bar / 4 Bar

Lattice Girders - 3 Bar / 4 Bar Lattice Girders / 3 Bars With spaced diagonals, 3 bars are assembled to form a girder. The single bar can be located against the ground or towards the inside of the tunnel, fitting a specified design…

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Imprint

Imprint Information provided according to Sec. 5 German Telemedia Act (TMG): DSI Underground GmbH Destouchesstrasse 68, 80796 Munich Germany Contact: Telephone: +49 89 309050200 Email: [email protected] HRB: 229250 VAT Id number:…

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ISO Certificates

Download ISO Certificates ISO Certificates DSI Underground Canada Quality Management System ISO 9001:2015 - English 30 July 2021 235.12 KB Download DSI Underground Canada Quality Management System ISO 9001:2015 - Spanish 30 July 2021…

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General Terms and Conditions

Terms and Conditions Download General Terms and Conditions Change Notices for Customers 21 September 2018 27.18 KB Download Terms and Conditions of Sale and Services 12 February 2018 245.38 KB Download Terms and Conditions of Purchase…

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Mining Applications

Steel Support Mining Applications Portal Applications Integral Portal Support and Ventilation Structures Cambered Supports for Inseam Use Steel Arches for Slopes and High Fall Areas Downloads more … Projects DSI Underground Image…

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Patents

Download Patents Patents DSI Underground Patent Rock Stabilizing Apparatus 30 May 2017 1.05 MB Download DSI Underground Patent Improved for Groundsupport rotatable 30 May 2017 2.01 MB Download …

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3 bar type

Lattice Girders, Steel Arches & Props Lattice Girders avaible in straight and arched segments 1. Joint Plate: ASTM A36 min. 2. Foot Plate: ASTM A36 min. Lattice Girder Bar Material: Tensile Strength 80ksi (550 MPa) min. Yield Strength…

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General

threadbar® System Rock and Soil Anchors System Description DSI Underground was a pioneer in the development of rock and soil anchor systems and technology for the Tunneling and Mining Industry. Today DSI Underground is a world leader…

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Grouting Pump Systems

ICTUS Pump System Pump Model ICT 060G Ratio : 8,1 Inlet Pressure : 4bar Output Pressure : 28bar Delivery JMin. Grout : 30 litres’ min. Delivery JMin. Water : 37 litres’ min Mixer Model ICT 5001 mixer Capacity : 3 HP  Bucket Capacity :…

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DIAMOND SEAL®

Absorbent Polymer for Lost Circulation Description DIAMOND SEAL is a water-swellable but not water-soluble, 100% crystalline synthetic polymer. DIAMOND SEAL absorbs hundreds of times its own weight in water. It is intended for use…

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3 Bar / 4 Bar

Lattice Girders - 3 Bar / 4 Bar Lattice Girders / 3 Bars With spaced diagonals, 3 bars are assembled to form a girder. The single bar can be located against the ground or towards the inside of the tunnel, fitting a specified design…

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Civil Applications

Steel Support Applications Northeast Ohio Regional Swer District Mill Creek Tunnel - Phase #2 Cornish Construction, Manhatten Beach, CA Relieving Arches Downloads more … Projects DSI Underground Image Trailer …

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Eyebolts

Eyebolts, Scaling Bars & Utility Hangers Butt Welded Eyebolt 44W material (60,000 psi) E = Ø 9/16 if 5/8"- 11 UNC thread  Ø 11/16 if 3/4" -10 UNC thread  L = 18" and 24" under eye  5/8" rated for 2,300 lbs 3/4" rated for 3,600 lbs…

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Threaded Fiberglass Bolts

Nominal 3/4" (20 mm) & 1" (25 mm) Fiberglass Bolts Dimensions 3/4" (20 mm) Bolt 1" (25 mm) Bolt 1" (25 mm) Hollow Bolt  E  Diameter 3/4" (20 mm) 1" (25 mm) 1" (25 mm) F  Grout Hole Diameter not available not available not available E …

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FASLOC® X-Treme Resin

Resins and Cement Cartridges FASLOC® X-Treme Resin Description FASLOC® resin grout anchors are composed of polyester resin and an organic peroxide initiator paste. The film barrier, composed of heat sealed polyester film, prevents…

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Tools & Hardware

Tools Miners Wrench Holder mild steel construction fits onto standard safety belts holds hammer head and regular wrench models Muck Scoop (Pelican Pick) with wooden handle replacement handles available L = 32" Raise Rascals (Folding…

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DSI Self-Drilling Bolt

Speciality Bolts Bar Size R25N R25N R32N R32N R32S R32S R38N R38N R51N R51N Diameter over threads [in] / [mm]  0.984 25  1.260  32 1.260 32  1.496  38  2.008  51 Cross sectional area of bar (a)  [in 2 ] / [mm 2 ]  0.378  244  0.614 396…

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Mining

Ground Support Products for Mining – We are your Partner for more Safety in Underground Mining As a globally leading producer and supplier of rock bolts and chemical construction materials for Mining, we are offering you reliable…

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Cable Bolts Plain & Bulb

Minicage Cable Bolts 0.5", 0.6" and 0.7" Plain Cable Bolt Dimensions 0.6" Cable Bolt 0.7" Cable Bolt Strand Diameter E 0.600" +0.026" -0.006" 15.24 mm +0.66 mm -0.15 mm 0.700" +0.026" -0.006" 17.78 mm +0.66 mm -0.15 mm Physical…

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Rebar Rockbolts

Rebar Rockbolts (Forged Head & Threaded) #5 (15M), #6 (20M), #7 (22M) and #8 (25M) Forged Head Rebar Dimensions #5 (15M) #6 (20M) #7 (22M) #8 (25M) Nominal Bar Size E 0.625" (16 mm) 0.750" (19.5 mm) 0.875" (22.2 mm) 1.0" (25.2 mm) Head…

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SanJuan EZ TRUSS

Truss System ASTM F432 gr6 - Nominal 30 Ton Capacity The SanJuan EZ Truss combines ease of installation with superior support performance.  It can be installed safely from the bolter without exposure to unsupported roof at anytime.…

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About us

Customized Ground Support Solutions for your Requirements Underground: DSI Underground Canada DSI Underground has over 2,000 employees worldwide with operations across EMEA (Europe, Middle East, Africa), Asia-Pacific, North America and…

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Research & Development

Research and Development – Underground As the market leader, DSI Underground is present in all global underground regions, delivering customized solutions to clients around the world. DSI Underground research and development is…

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Sustainability

DSI Underground makes a difference. We are committed to sustainability on all levels everywhere. Sustainability as a Corporate Principle For DSI Underground, sustainability is finding the right balance between financial and economic…

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International Organizations

International Organizations In order to always be close to our markets, implement new technologies and fully understand our customers´ requirements, DSI Underground maintains membership in various international associations such as:…

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Underground Mining and Tunneling Solutions

Exhibitions PRODUCTS   Download ISO Certificates Download DSI Underground Environmental Policy

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Press Releases


03 February 2016

DSI has signed agreements to acquire Jennmar businesses outside the US and sell its US Mining business to Jennmar

DSI has signed agreements to acquire Jennmar businesses outside the US and sell its US Mining business to Jennmar 03 February 2016 DSI to acquire Jennmar businesses in Australia, Europe, Latin America and China (50% share) Jennmar to…

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Projects


Fort Regent, which from its elevated position proudly dominates…

Das Megaprojekt Grand Paris Express, das zukünftig den direkten…

The new Stuttgart-Ulm line, with ist centrepiece the new…

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DSI Underground Canada Ltd.

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