Longstreth Medal in Philadelphia, USA for the world’s greatest technical achievement
Thanks to the growing worldwide recognition of DYWIDAG systems and construction projects
DYWIDAG begins licensee business.
Several post-tensioned prestressed concrete bridges are built in Austria, Sweden, Denmark, Finland, Norway and the Netherlands
Sumitomo obtains a license for manufacturing and distributing DYWIDAG's Post-Tensioning System and for applying DYWIDAG's Free Cantilever Construction Method in Japan and the Far East
DYWIDAG's Post-Tensioning System is exclusively used for DYWIDAG's own projects or partner projects
The decision is made to market the DYWIDAG Post-Tensioning System outside the group. The License Department is founded within DYWIDAG
Systematic development of additional DYWIDAG systems such as bar, ground and rock anchors using 16mm Ø threabars and stay cable systems.
DYWIDAG subsidiaries are founded in Austria, USA, Canada and Italy.
Creation of an international network of companies for the global distribution of DYWIDAG systems and know-how
DYWIDAG subsidiaries are founded in Austria, USA, Canada and Italy.
Creation of an international network of companies for the global distribution of DYWIDAG systems and know-how
Second Main Bridge (135 + 135m spans), Frankfurt, Germany. First significant application of DYWIDAG rock anchors with double corrosion protection in Waldeck II cavern near Kassel, Germany.
First tests are carried out on GEWI® Piles for subsequent distribution. Development of the DYWIDAG Strand Post-Tensioning System
First Canadian Application of Segmental Form Traveler Construction in Vancouver, Canada
First US Application of Segmental Form Traveler Construction in San Diego, California, USA
Intensified activities as a general contractor in turnkey construction, structural design, industrial construction, and underground projects as well as production of precast segments.
DYWIDAG establishes the DSI Company Group as an independent organization in order to take over the work of the Licensee Department and continue the successful worldwide marketing of DYWIDAG systems and technical know-how
DSI companies founded in the Netherlands, South Africa, UK, Korea, Taiwan, Thailand, Venezuela and France. DSI agencies founded in Turkey, Iran, Saudi Arabia, United Arab Emirates, Qatar and Oman
DSI committed to total quality;
DIN EN ISO 9001 since 1994
DIN EN ISO 9001 since 1994
New DSI companies in Portugal and Indonesia. New DSI representatives in Lebanon, Czech Republic, Latin America, Croatia, Bosnia, Herzegovina and Malaysia
Plus Austrian and French affiliates into a single DSI GmbH with European branches
More than 50 subsidiaries, licensees and agents
DSI acquires ANI Strata Products and establishes a new business in the underground mining industry as well as in Australia
DSI opens new facility for mining products in Salt Lake City / USA and in Johannesburg / South Africa
Integration of SUSPA GmbH activities into the German business of the DSI Group. Merger creates SUSPA-DSI GmbH
DSI's global network consists of more than 75 subsidiaries, licensees and agents
DSI strengthens its mining business by acquiring Celtite Pty Ltd (Celtite), Australia
DSI acquires Underground companies in North America
DSI acquires Stewart Mining in Canada. This acquisition establishes DSI as the market leader for mining products in Canada
The European private equity firm Industry Kapital acquires DSI
DSI acquires Artéon SA in France. This step strengthens DSI's market position in France and its market leadership for geotechnical and form tie systems in Europe
DSI acquires the leading supplier of mining products Mexicana de Anclas Mineras in Zapopan, Jalisco, Mexico
DSI acquires Galaxy SA with its subsidiaries Technique Béton SAS and Mandelli-Sétra SAS. The Galaxy Group is a leading manufacturer and distributor of formwork accessories, special mortars, lifting and fastening tools in construction industry.
DSI strengthens its tunneling division by acquiring ALWAG Tunnelausbau Ges.m.b.H. in Pasching, Austria
DSI further strengthens its tunneling and mining activities in North America by acquiring the shares of American Commercial Incorporated (ACI), Bristol, VA, USA
DSI USA acquires Fasloc, Inc., a premier producer of Resin Cartridges for mining and tunneling in the USA
DSI expands its mining activities in South America by acquiring Soprofint SA, headquartered in Santiago, Chile
DSI acquires 100% of the shares of the German contec Bausysteme GmbH.
Headquartered in Porta Westfalica, Germany, contec is a leading specialist supplier of formwork and sealing systems on the domestic market
Headquartered in Porta Westfalica, Germany, contec is a leading specialist supplier of formwork and sealing systems on the domestic market
DSI acquires all outstanding shares of the Italian company DYWIT SPA, Milan, Italy
DSI is sold by Industri Kapital to CVC Capital Partners. CVC Capital Partners is a leading international private equity company with a total of 11.6 billion Euros in equity capital
The acquisition of MET-TECH Industries Ltd., USA extends DSI's market leadership in the supply of mining products in North America
DYWIDAG-Systems International (DSI) acquires business from AGRHIMERC S.A.C., Peru and establishes DSI Peru S.A.C.
Extension of DSI's market presence in South America by acquisitions
DSI acquires the remaining 38% of shares of PROTENDIDOS DYWIDAG Ltda., Brazil
The acquisition of DYWIDAG-Systems International (DSI) by Triton is closed on June, 15th, 2011. Triton, a highly respected European private equity house, is now the owner of DSI


The JFP 95 Blue Anti-Static Dust Suppressant marks DSI’s continuing expansion into chemical products for the Underground industry. DSI plans to use the existing distribution network that was established by WB Mining along with its own global sales network to market and sell the JFP product line worldwide.
DSI opens a new International Purchasing Office in Shanghai, China.
The new office coordinates the co-operation with DSI’s Far East suppliers and all internal procurement divisions
The new office coordinates the co-operation with DSI’s Far East suppliers and all internal procurement divisions
- Acquisition of 100% of JENNMAR Canada strengthens DSI’s mining capabilities in Canada
- Acquisition of 49% in J-LOK® Resins allows DSI to have own manufacturing of resin capsules in Australia
- Establishment of a bolt and resin joint venture with JENNMAR in South Africa
Foundation of the Joint Venture DSI-Bridgecon in India consisting between the partners DSI and Bridgecon India Private Ltd. focusing in the business areas of Stay Cable Technology, Post-Tensioning and Geotechnics.
Acquisition of the Jennmar Mining businesses outside the US, sale of the US Mining business to Jennmar. The acquisition allows DSI’s customers to profit from the most comprehensive portfolio in ground support products.


Establishment of the new company DSI Underground Mongolia LLC in Ulaanbaatar, Mongolia.
Change of name of the US American DSI Underground unit located in Louisville, KY, USA to DSI Tunneling LLC. All sales activities in Tunneling North America are concentrated at this location.
Establishment of DSI Underground Nordic AB in Skellefteå, Sweden. The new logistics center can efficiently supply some of the largest underground metal mines in Europe with high quality ground support products on short notice.
