News and Press

October 2020

Breakthrough at the Andesita mining project (Chile).

With safety as a priority and in a period marked by the pandemic, OSSA has completed for CODELCO – Chile’s National Copper Corporation – the Adit 71 breakthrough of the Teniente mine to connect with the Andesita project, which in the near future will facilitate the access to the project and an improvement in the Full Potential objectives.

Cale
October 2020

OSSA has been awarded the Health & Safety Badge for its activity at the Fresnillo mine (Mexico).

The Government of Mexico, through the Mexican Institute of Social Security, has distinguished OSSA with the Health & Safety Badge for its activity in the Fresnillo mine. The distinction  is the result of having a  CLIMSS approved Healthy Return Monitor, having made its Health & Safety Protocol before  COVID-19 and successfully approving its  assessment on the New Normality  platform.

SelloDistintivo_3298818620
October 2020

OSSA and ICO sign a deal up to 9 million USD to promote the Spanish company’s activity in Chile.

Obras Subterráneas S.A (OSSA) and the Instituto de Crédito Oficial (ICO) signed on September 21st a contract of counter-guarantee of line of guarantees of a maximum amount of 9 million USD for the project that OSSA is executing in Chile for the NATIONAL COMPANY OF COPPER (CODELCO) in Mine El Teniente, the largest mine in the world.

The project,  called Mina Andesita, includes the development of tunnels and galleries of more than 30 km. OSSA, as a leading company in the mining sector and reference contractor of CODELCO in other projects as the Chuquicamata and Andean mines, was awarded this project whose implementation period extends until 2024.

CODELCO asks all its suppliers to comply with their sustainability policy, based among other points on consolidating a preventive culture and taking care of the environment, as well as enhancing innovation processes. In accordance with these principles, OSSA has developed an Environmental Protection Plan that will continue to minimize the impact on the environment and ensure the sustainability of the project.

Support for the activity of Spanish companies in third markets is one of the strategic axes of action of the ICO. To this end, it has different financing instruments, among which are the programs of guarantees and international guarantees to promote  the international growth of Spanish companies that, like OSSA, manage to win and execute important contracts around the world. The operation signed with OSSA is the first of its type to be granted to a Spanish company established in Chile.

With this contract, the first of OSSA with the ICO in its more than 65 years of history, OSSA strengthens its financial capacity in international projects and especially in Chile, obtaining the support of one of the financial institutions of the Spanish government with the most recognized prestige and international background.

About OSSA

OSSA is a Spanish construction company with more than 65 years of experience in the execution of tunnels and galleries. With more than 1,000km of tunnels and shafts, OSSA is one of the leading companies in its sector, not only nationally but also internationally. Since 2010, when it began an internationalization process, until today, OSSA has developed its activity in 13 different countries, consolidating its position as an international company with a turnover outside Spain of more than 80%.

About the ICO

The Official Credit Institute/ICO (www.ico.es) is a public entity attached to the Ministry of Economic Affairs and Digital Transformation. The ICO has become a benchmark in the financing of both SMEs and large investment projects, for this purpose it has a comprehensive offer of financing for companies, all sectors of activity, sizes and geographical coverage to promote its activity in Spain and in third markets. Support for the international expansion of Spanish companies and the attraction of foreign investment is a hallmark of the ICO Group and is one of the essential pillars of its strategy.

The ICO contributes to inclusive and sustainable growth, promoting those economic activities that, because of their social, cultural, innovative, or ecological importance, deserve promotion and development.

Chile
October 2020

Breakthrough at the Zarátamo gallery (Spain)

On September 28, after the execution of 405 meters of excavation, the  Zarátamo gallery broke through for the first time. This work belongs to the Emergency Galleries Project: Vitoria-Bilbao section, which OSSA is executing for ADIF in the Basque High Speed Y .

Zarátamo
September 2020

Breakthrough at the Beasain gallery (Spain)

Breakthrough at the 655 meters long Beasain gallery, belonging to the project for the new emergency galleries in the tunnels of the Vitoria-Bilbao-San Sebastián – Bergara-Astigarraga high-speed line, which OSSA is executing for Euskal Trenbide Sarea – Basque Railway Network, in a joint venture with TECSA Empresa Constructora S.A. and Construcciones Olabarri S.L.

Beasain
September 2020

Environment protection awareness campaign (Perú)

In order to draw attention to the need to protect and care for the Environment, in the Lima and Callao Metro Line 2 project (Peru) the awareness campaign called “Cultivating in a Helmet” was developed, to spread the application of the “3R’s” (Reduce, Reuse and Recycle) through the transformation of useless construction helmets into flower pots. The initiative was a success, evidencing the commitment of OSSA employees to protecting the environment.

Macetas
July 2020

Aid to the population in need (Chile)

In the fight against COVID-19 in Chile, a Safe Return Plan was implemented in the projects being carried out for Metro de Santiago S.A. Additionally, and at the initiative of the Joint Committee, the Union Delegate and the Construction Administration and in coordination with the Community Development Directorate (DIDECO), it was decided to aid the vulnerable population of the Quilicura commune by delivering food boxes. In total, 91 boxes were distributed, of which 50 were donated by the company and another 41 were donated by the workers themselves.

OSSA is currently executing for Metro de Santiago, in consortium with the company Echeverría Izquierdo S.A, the Reconstruction of Stations and the Civil Works, Pikes, Galleries, Tunnels and Stations of the Extension of Line 3, Sections B and C.

Ayuda población vulnerable
July 2020

Break through at the E.T.S. emergency galleries (Spain)

The Ordicia gallery, 411 meters long, belonging to the project of the new emergency galleries in the tunnels of the Vitoria-Bilbao-San Sebastián high-speed line – Bergara-Astigarraga section, broke through. OSSA is executing the works for Euskal Trenbide Sarea – Red Ferroviaria Vasca, in a joint venture with TECSA Empresa Constructora S.A. y Construcciones Olabarri S.L.

Cale Ordicia
May 2020

Awareness campaign against COVID-19 at the Guamúchil Tunnel (México)

In compliance with one of the commitments of our Management, established in the Occupational Health and Safety, Environment, Quality and R & D Policy, a campaign has been carried out on the importance of fighting the Coronavirus COVID-19 and the measures to be taken to avoid spreading the disease. In addition, masks have been delivered and the population is encouraged to make use of them.

With this campaign, we aim to contribute to the awareness of the population about the disease and to prevent the spread of it.

Reparto cubre bocas
April 2020

The works of the Santiago Metro in the press (Chile)

The magazine Canteras y Explotaciones has published an article on Sections B and C of the Extension of Line 3 of the Santiago Metro.

The full article in the following link.

March 2020

Communiqué from the General Management on the measures taken against the coronavirus COVID-19 (Spain)

Due to the growing concern about the spread of the COVID-19 coronavirus and following the recommendations of the health agencies of the Community of Madrid and the Government of Spain, employees of the OSSA headquarters in Madrid will remain at home, working in remote, from March 13 and as long as the health authorities recommend it.

At OSSA we have a solid Business Continuity Plan, as well as all the necessary technological means, which allow us to guarantee the continuity of our services in their entirety.

In the coming days we will review the situation continuously and we will keep you informed about any new developments that may occur.

If you have any questions, please do not hesitate to contact us.

March 2020

Break through at the Quellaveco mine (Peru)

The connection between the Entrance and Exit portals of the Salviani – Capillune Tunnel at the Quellaveco mine has been accomplished. Congratulations to the whole team!

OSSA is building the Quellaveco tunnels for the Anglo American mining company, in consortium with the Graña y Montero company, with a budget of US $ 42.9 million. The project is in the Moquegua region and includes a 3 km tunnel, which will serve to pass the ore conveyor belt, and two tunnels, one 1 km and the other 0.5 km, for the passage of the tailings canal.

Cale Quellaveco
March 2020

Progress of the Metro de Santiago Line 3 project (Chile)

OSSA’s participation in the expansion of the Santiago de Chile metro network began in 2013 and since then it has built more than 10 km of tunnels. It is currently executing, in consortium with the Echeverría Izquierdo company, civil works, shafts, galleries, tunnels and stations of the extension of Line 3, Sections B and C.

February 2020

Presentation to the schools of the El Guamuchil Tunnel (Mexico)

As part of the children’s motivation program developed by the community school of El Guamuchil (Nayarit, Mexico), Ana Karen Becerra, Head of Environment and Health and Safety of OSSA in the El Guamúchil Tunnel project, visited the school to present her work. Ana Karen Becerra explained, among other aspects, how environmental measurements are made, how to prevent fires and the use of fire extinguishers, explaining how to check them, take care of them and keep them in good condition. At the end of the day, a practice was done in the schoolyard and several fire extinguishers were delivered for their prevention team.

OSSA is running the El Guamuchil road tunnel on the Las Varas – Puerto Vallarta highway for the Carso group. The tunnel has a trunk section of 17.0 m x 10.4 m and a length of 1,080 m, of which OSSA has executed 540 m and the other 540 m have been executed directly by Carso.

Escuela El Guamúchil
January 2020

Breakthrough at the Cabanasses mine (Spain)

OSSA is carrying out for ICL the construction of the Ramp Project at the Cabanasses mine (Suria, Spain). Once finished, this 4,755m long ramp will allow for the extraction of the mineral through the use of conveyor belts instead of the trucks that currently drive along the town. The excavation and support works are being carried out on schedule. In addition, slabs are being casted and repairs are undertaken in areas of the previously excavated galleries showing signs of weakness.

We are happy to announce that, working together with the ICL team, we have achieved the breakthrough of BP5, an important milestone at the Ramp Project. Thanks to all the people who made this success possible.

Cale BP5
January 2020

OSSA refinances its debt until 2025

OSSA signed last September 26 an agreement to refinance the financial debt of the Company and its subsidiaries with its financial entities, which refinances the syndicated debt of the Group until 2025, being reduced by 16% and granted a wide line of guarantees.

OSSA has requested the judicial homologation of the said refinancing agreement, as allowed by the 4th Additional Provision of the Spanish Bankruptcy Law, to provide the operation with greater solidity, and the said homologation has been published in the Spanish Official Gazette (BOE) of January 2, 2020.

As a result of this refinancing agreement, the OSSA Group manages to rationalize its debt and to have greater flexibility in its financial commitments, which will contribute to achieving the objectives of its business plan within the current market needs.

It is a fundamental agreement to contribute to the future development of the OSSA Group, which has thus secured the support of its main creditor financial entities and, consequently, may be consolidated in the national and international markets in which it is present, facilitating viability and Group stability in the short and medium term.

December 2019

Break through of the Guamuchil tunnel (Mexico).

The Guamúchil tunnel, which OSSA is executing for the Carso group on the Las Varas – Puerto Vallarta highway, in the State of Nayarit, Mexico, has been broken through.

The tunnel has a 17.0 m x 10.4 m section and a length of 1,080 m, 540 m of which have been excavated by OSSA and 540 m by Carso.

Congratulations to all the participants!

Túnel Guamúchil
October 2019

OSSA sponsors the congress Tunnel & Mining 2019 (Perú).

OSSA sponsors the congress Tunnel & Mining 2019, held in Lima, Perú, on the 22, 23 and 24 of October.

Tunnel and mining Lima
October 2019

OSSA at the Mining and Minerals Hall (Spain).

OSSA’s Business Development and R&D Manager, Luis Jané Guitart, participated in the seminar on innovation at the Mining and Minerals Hall (MMH) in Seville, presenting the TUÑEL project.

The TUÑEL project seeks the competitive improvement of the drilling and blasting cycle in mining and underground works through the conception of new engineering techniques, explosives, prototypes and advanced tools and has been developed by OSSA in consortium with Maxam, Expace, Dacartec, Subterra Ingeniería, Putzmeister and Cepasa.

This project has been co-financed by the European Regional Development Fund (ERDF) with the aim of promoting technological development, innovation and quality research (IDI-20150702).

MMH1
October 2019

Waterproofing works by HISISA (Spain).

Through its subsidiary HISISA, OSSA develops waterproofing works in tunnels. In this image, the works that are being carried out at the Requejo tunnel, of the Lubián-Zamora section, Sub-section: Pedralba Pradería-Túnel de Padornelo of the Madrid-Galicia High Speed platform, which executes the OSSA-Acciona JV. The section has 4.96 km in double track and 1.44 km in single track.

Impermeabilización túnel Requejo
August 2019

OSSA’s South Pacific Manager interview in the magazine of the Chilean Concrete and Cement Institute.

OSSA’s South Pacific Manager has been interviewed by the magazine of the Chilean Concrete and Cement Institute.

August 2019

Inauguration of elevators at the Santiago Metro (Chile).

The Chilean Minister of Transport, Gloria Hutt, together with the president of Metro, Louis de Grange, and the Undersecretary of Social Services, Sebastián Villarreal, inaugurated the elevators that will facilitate access for people with reduced mobility at Line 5 San Joaquin Metro Station.

OSSA, in consortium with the company Echeverría Izquierdo, has built this project that will help improve the accessibility of the Santiago de Chile Metro stations.

August 2019

Presentation of the Sinifaná Tunnel (Colombia).

OSSA, committed to the community surrounding the Sinifaná tunnel project in Colombia, attended the request of the Orlando Velásquez Arango Educational Institution, located in Bolombolo, district of Venice – Antioquia, and organized a talk on the “Sinifaná Tunnel Construction Process , Roles and Responsibilities ” in order to provide students with vocational guidance. On behalf of OSSA, representatives from the Technical, Environmental, Health and Safety and Social areas took part in the presentation.

The activity was a success, showing students great interest and participation.

Charla I.E. Orlando Velásquez Arango
August 2019

Elevators at the Santiago Metro Line 5 (Chile).

OSSA’s participation in the expansion of the Santiago de Chile metro network, in consortium with the company Echeverría Izquierdo, began in 2013 and since then more than 10 km of tunnels have been built. We are currently executing the civil works, shafts, galleries, tunnels and stations of the Line 3 extension, Sections B and C.

We present below an interesting video of the works that have been carried out to improve access to the stations of Line 5, through the construction of elevators.

July 2019

Breakthrough of the Sinifaná tunnel (Colombia).

On the occasion of the Sinifaná tunnel breakthrough, which OSSA is building for the Consorcio Constructor Pacífico 1 in the Pacifico 1 Connection Highway in the province of Antioquia (Colombia), we want to share with you a video that shows the development of the works. The project consists in a double parallel tunnel, 1,400 m in length and 85 m2 cross section. We hope you’ll find it interesting!

July 2019

OSSA distinguished in Peru.

OSSA has been distinguished by the construction consortium of the Lima and Callao Metro Line 2 (Peru) for its participation and commitment in the activities scheduled for the World Environment Day, held on June 5.

OSSA is currently executing the excavation, temporary support and lining of the tunnel between San Juan de Dios station and PV 19a shaft, of the Lima Metro. The section has a length of 1,312 ml and includes the construction of the ventilation shaft PV-19, located in the center of the section. The project includes a 301m cavern for four tracks.

Dia Medio Ambiente
July 2019

OSSA will build new emergency exits for ETS (Spain).

OSSA, in a consortium with the companies Tecsa and Olabarri, has been awarded the project for new emergency exits in the tunnels of the Vitoria-Bilbao-San Sebastián High-Speed Line, Bergara-Astigarraga section, tendered by Euskal Trenbide Sarea (ETS).

The works are located on the Vitoria – Bilbao – San Sebastián axis of the high-speed train. The project consists of four different sections of tunnel where, by the new regulations, it is necessary to fit new parallel emergency galleries so that there is no more than 1,000 m of tunnel without emergency exit. The projects awarded has a budget of € 10.6 million and 21 months construction period.

Galerías ETS
June 2019

OSSA at Rodada Fresnillo 2019 (México).

To commemorate the World Environment Day, OSSA attended the Rodada Fresnillo 2019 (Zacatecas) organized by the Minera Fresnillo PLC, in which nearly 300 cyclists participated. D. Rogelio Mendoza, OSSA’s Head of Quality and Environment at the Fresnillo Mine, gave an exhibition on vermiculture and the repair of eroded soils through the California red worm. The participants were also given various seeds and leaflets for the creation of organic fertilizer through plant and vegetable waste.

Rodada Fresnillo 2019
June 2019

OSSA at the Shotcrete Underground Congress (Chile).

OSSA’s South Pacific Country Manager, Mr. Adolfo Sicilia Mármol, presented the paper “Cases of success in the preventive maintenance of shotcrete equipment” at the Shotcrete Underground Congress held in Santiago, Chile on June 13 & 14, 2019 .
This congress is an event focused on the advances associated with the support with shotcrete, with emphasis on the use of fibers in this material, the robotization of the shotcrete processes and the importance in the preventive maintenance of the equipment, which finally it translates into an increase in productivity.

Shotcrete
May 2019

The OSSA’s CSR on the El Viario magazine (Colombia).

The article “Gloria Saigama, a woman who stops the difficulties and lets the dreams go” has been published on the El Viario magazine (Colombia), reflecting one of OSSA’s initiatives in the field of corporate social responsibility.

OSSA is executing in the Colombian Antioquia province, for the Consorcio Constructor Pacífico 1, the Sinifaná double tunnel, 1,400 m long and 85 m2 cross section.

May 2019

First blast at the El Teniente mine (Chile).

On May 24, OSSA blasted for the first time at the CODELCO’s El Teniente Division. The advances in the Andesita project began with this milestone. The execution of more than 22 km of horizontal developments is planned in this project.

Congratulations to all the team that has participated in this achievement!

Codelco
May 2019

Break through at the Sinifaná tunnel (Colombia).

The Sinifaná left tunnel, which OSSA is building in Colombia for the Constructor Pacífico Consortium 1, broke through on May 21.  The work consists of two parallel road tunnels, each 1,400 m long, with 85 m2 cross section.

Sinifana
May 2019

OSSA in the 100 Years of Metro Madrid conference (Spain).

OSSA’s Technical Director, Mr. Javier Torre Rodríguez, participated in the 100 Years of Metro Madrid and its International Translation Conference, held on May 9 and 10 and organized by the Technical School of Mining and Energy Engineers of Madrid, Polytechnic University of Madrid and the Spanish Association of Tunnels and Underground Works (AETOS).

The presentation of Mr. Javier Torre was about the New Lines in the Metro of Santiago de Chile and Lima, being very well received by all attendees.

Javier
May 2019

OSSA awarded by the CCHC (Chile).

The Chilean Chamber of Construction has awarded the work of OSSA for its trajectory in Health and Safety in Chile during 2018, with the addition to the 5 ESTRELLAS honor roll.

With this award, the Chilean Chamber of Construction recognizes companies that have distinguished themselves in terms of occupational health and safety.

After more than 65 years of success, OSSA continues its international expansion serving large clients in civil engineering and mining, always prioritizing health and safety at work.

Premios 5 Estrellas CCHC
April 2019

World Day for Health and Safety at Work.

The World Day for Health and Safety at Work, which takes place annually on April 28, promotes the prevention of occupational accidents and diseases throughout the world. It is an awareness campaign aimed at promoting a culture of safety and health, which can help reduce the number of deaths and injuries related to work.

On the occasion of this day, special activities have been carried out in our Metro Lima and Metro de Santiago projects:

In the OSSA – Echeverría Izquierdo Consortium (Metro de Santiago), a theater play was held to reinforce the importance of “not putting oneself in the line of fire” when faced with a risk. And it ended with the awarding of several workers for their outstanding work with safety.

In the Metro of Lima, a divination game was conducted on health and safety aspects and ended with the awarding of several workers for their outstanding work with safety.

OSSA, always committed to safety.

Lima
April 2019

International R&D project (Spain – Perú).

OSSA is developing, in joint venture with the company Subterra Ingeniería SAC, the R & D project “ADVANCED METHODOLOGY BASED ON QUANTIFIED MAPS TO EVALUATE AND MANAGE THE SEISMIC RISK IN UNDERGROUND WORKS (SYOS)”.

The main objective of the SYOS project is the design and development of an advanced methodology based on seismic zoning, to evaluate and manage seismicity in tunnels, mines or hydroelectric caves, with which it is intended to achieve a solution based on quantified maps integrated in a computing tool. Thanks to this methodology, it is intended to determine the best solution for the maintenance of underground works in areas of high seismic vulnerability, with the aim of increasing safety and mitigating the effects derived from the deformations associated with this risk.

This project has been financed by the Spanish Center for Industrial Technological Development (CDTI) and co-financed by the European Regional Development Fund (ERDF). The part of the project developed in Peru is financed by the National Council of Science, Technology and Technological Innovation of Peru (Concytec).

SYOS
March 2019

Social integration at the Sinifaná project (Colombia).

In the attached video of the Concessionaire Pacífico 1, from minute 15:40 on, an example of the social integration that OSSA is carrying out at the Sinifaná project, Antioquia province (Colombia) is shown. OSSA is firmly committed to the Corporate Social Responsibility in all the works and countries where it operates.

The Sinifaná project consists of two tunnels in parallel, of 1,400 m each and 85 m2 of section.

March 2019

Kick off ceremony of the Metro de Santiago Line 3 extension (Chile).

Metro de Santiago began on Tuesday the extension works of the recently inaugurated Line 3, in which the OSSA – Echeverría Izquierdo Consortium executes sections B and C of the Construction of Civil Works, Shafts, Galleries, Tunnels and Stations contract, for an approximate amount of 85 million euros.

At the inauguration, President Sebastián Piñera indicated: “Today we are beginning an expansion of Line 3 that will add an additional 3.8 kilometers. It will reach the Quilicura district on Avenida Manuel Antonio Matta and will benefit about 210 thousand new people who will join the network”.

Inicio de las obras
February 2019

OSSA bags two contracts from CODELCO El Teniente (Chile).

The CODELCO “El Teniente” Division has awarded to OSSA the contracts Ca1 and Ca2 of the “Access Works and Diamond and Andesite Constructive Facilities” project. The works will be developed in two phases and they include 22km of tunnels. OSSA is grateful for the confidence of CODELCO, with whom we work since 2012 in the Chuquicamata and Andina mines.

Proyecto Andesita
February 2019

Artistic performance in the Santiago de Chile Metro Line 5.

Along with Metro de Santiago and the production company Galería Lira, the Echeverría Izquierdo-OSSA Consortium (EIOSSA) is developing an artistic project that includes more than two thousand square meters of urban art in the construction site of the new eight elevators of Metro Line 5. We invite you to read this interesting article about this impressive artistic performance.

January 2019
Inauguration of the Santiago de Chile Metro Line 3.

OSSA, as a member of the Echeverría Izquierdo – OSSA (EIOSSA) consortium, is proud of its participation in the construction of the recently inaugurated Metro Line 3 of Santiago de Chile.

Linea 3 Metro
January 2019
Rejection of Statens Vegvesen’s appeal related to the Sørkjosen Tunnel (Norway).

OSSA won in September 2018, against SVV (Statens Vegvesen), Norwegian administration of roads, the appeal for the early termination of the contract for the construction of the Sørkjosen tunnel. The Court of Appeal of Hålogaland (northern Norway) ruled that the resolution made by SVV was not justified and ordered the Norwegian administration to pay OSSA 16 million Norwegian kroner, declaring that OSSA had the capacity and the necessary means for the execution of the work and that SVV terminated the contract unlawfully. Statens Vegvesen appealed to the Court of Cassation in Oslo, which, on December 21, 2018, has decided not to admit the cassation appeal. This process closes the process, and the appeal ruling is final.

January 2019
Contract awarded at the Quellaveco mine (Peru).

OSSA will build the tunnels at the Quellaveco mine (Peru) for the Anglo American mining company, in consortium with the company Graña y Montero, with a budget of US $ 42.9 million.

The project is located in the Moquegua region and includes a tunnel of 3 km, which will serve for the passage of the heavy ore conveyor belt, and two tunnels, one of 1 km and one of 0.5 km.

December 2018
Support of the Spanish Ministry of Science, Innovation and Universities to the R&D project “DRILLSENSE”.

The Spanish Ministry of Science, Innovation and Universities has decided to support the R&D project “DEVELOPMENT OF A SENSORIZATION KIT FOR EFFICIENT, SUSTAINABLE AND SAFE PERFORATION IN MINING AND UNDERGROUND WORKS (DRILLSENSE)”, under the program “Retos-Colaboración” 2017

December 2018
Metro de Santiago awards works to OSSA (Chile).

OSSA, in consortium with the company Echeverría Izquierdo SA, has been awarded sections B and C of the Construction of Civil Works, Shafts, Galleries, Tunnels and Stations of the Extension of Line 3 of the Santiago de Chile Metro, with a 85 million euros budget. This contract reaffirms Metro’s trust in OSSA, which has already executed more than 10km of tunnels for the Santiago Metro.

December 2018
Construction of the Tres Ponts tunnel begins (Spain).

Construction of the Tres Ponts tunnel, that OSSA is executing for the Acciona-Copcisa JV at the C-14 road in Organyà (Lleida), has begun. The road tunnel is 1,272 m in length, with a cross section of 100 m2. The excavation is carried out using the NATM method, using explosives in the areas of harder rock and mechanical means in areas where the material is less hard.

Tres Ponts
November 2018
OSSA awarded the Potencia prize (Spain).

OSSA has been awarded the Potencia prize in the category “Tunnels and Underground Works” for its project “Expansion of the Bekkelaget treatment plant” (Norway).

The Potencia awards, which celebrate its twelfth edition, recognize the quality and innovative effort of Spanish construction and engineering companies in the design and implementation of large projects throughout the world.

November 2018
The Chironta Reservoir Diversion Tunnel broke through (Chile).

The Chironta Reservoir Diversion Tunnel, which OSSA is executing for the Dragados-Besalco consortium, broke through. The tunnel has a general section of 58 m2, a 477 m length and 2.5% slope. The contract also includes 37 m of a 105 m2 cavern for the future valve housing.

Cale Chironta
November 2018
The works in the Sinifaná tunnels are progressing at a good pace (Colombia).

The works of the Sinifaná tunnels, which OSSA is executing in Colombia for the Concessionaire Vial del Pacífico, are advancing at a good pace. The awarded contract consists in the excavation of two tunnels in parallel, of 1,400 m length each, with a cross section of 85 m2. We leave you with an interesting video where you can see the development of the works.

October 2018
Two scientific articles based on the R&D project TUÑEL.

We are pleased to share two scientific articles based on the project TÚÑEL (“Research project for the competitive improvement of the drilling and blasting cycle in mining and underground works through the conception of new engineering techniques, explosives, prototypes and advanced tools”). This R & D project is being possible thanks to funding from the Spanish Ministry of Economy and Competitiveness, through the CIEN program of the Center for Industrial Technological Development (CDTI).

October 2018
Two shafts at the Atacama, Copiapó and Chanaral Desalination Plant.

OSSA is building two shafts using the drill & blast technique, with shocrete reinforcement. The use of bolts as part of the support is also included, and three steel frames at the beginning of the shaft.

September 2018
OSSA has won an appeal against the Norwegian Roads Administration (Statens Vegvesen).

The Court ruled that OSSA possessed the capacity and the resources necessary to perform the works and that the Norwegian Roads Administration terminated the contract illegally.

June 2018
The Compostela – Las Varas section (México).

The works of the Compostela – Las Varas section of the Jala – Puerto Vallarta highway in Mexico are advancing at a good pace. We leave you with this impressive video that shows the development of the works, we hope you will like it!

November 2017
The CODELCO Andean Division project (Chile) on inGEOpres magazine.
April 2018
Los Leones Metro Station, Santiago (Chile).

OSSA has executed, in consortium with the Chilean company Echeverría Izquierdo, the Los Leones Metro Station project for Metro of Santiago (Chile). The Los Leones Metro Station combines metro Lines 1 and 6 and includes also the civil works of the station entrance.

We leave you with this amazing video.

April 2018
The Haulage III tunnel (Chile) broke through.

Here is a video of the Haulage III Tunnel, 4,833 m long and 42 m2 section, an important milestone for the “New Transfer System” in the Andina Division (DAND) of CODELCO (Chile).

Congratulations to the whole team!

April 2018

The Jala – Las Varas project (Mexico) advancing at a good pace.

The works at the Jala – Las Varas section of the Guadalajara – Puerto Vallarta highway in Mexico are advancing at a good pace. The project consists of the excavation and support, using top heading and benching, of three road tunnels with a cross section of 21.1 m x 11.4 m. The total length of the excavation of the 3 tunnels is 595 m (240 m, 235 m, 120 m), with a longitudinal slope of between 0.3 to 3.0% and a maximum and minimum overburden of 40 m and 12 m respectively. The excavation is carried out by using conventional means. The temporary support is based on shotcrete, corrugated grout rock bolts, metallic trusses with IR type profile 203 x 59.6k kg/m. The final reinforced concrete lining will be 40 cm thick.
April 2018
The Haulage III tunnel (Chile) broke through.

The Haulage III tunnel, 4,833 m long and 42 m2 cross section, broke through. This is an important milestone for the “New Transfer System” in the Andina Division (DAND) of CODELCO (Chile). The mine is located in the central part of the Andes Mountain Range, V Region of Valparaíso, 50 km northeast of Santiago, and exploits the Río Blanco copper deposit.

Good job!

Cale túnel Haulage III
April 2018
Good performance of the Atizapan tunnels (Mexico).

Good performance of the Atizapan tunnels (Mexico), that OSSA is currently executing for the company CPVM S.A. de C.V. The project involves 2 road tunnels, Cahuacan and Los Gallos, 113 and 208 meters long respectively. The top heading excavation is excavated in 3-phases and 2-phases in benches. Self-drilling 14m long bolts are used throughout the tunnel as canopy, and micro piles are used in the portals. Also metal trusses 152×37.2 are placed every meter.

Túnel Cahuacan II
April 2018
OSSA bags its first contract in Colombia.

OSSA begins its activities in Colombia with the construction of the Sinifaná tunnels, in Antioquia province. The awarded work consists in the excavation of two tunnels in parallel, 1,400 m each, 85 m2 cross section. These works belong to the project called Autopista Conexión Pacífico 1, which in turn belongs to a larger project called Autopistas para la Prosperidad.

With the entry into Colombia, OSSA will have a great opportunity in a country where the construction of more than a hundred kilometers of tunnels in the medium term is planned.

Sinifana
April 2018
Hidromanta project (Peru) advancing at a good pace.
The tunnel of the Hidromanta Hydroelectric Project in Peru, which OSSA is executing for the Cobra group, is advancing at a good pace, having already accomplished 43m. The project consists in the excavation of a 1,858 m hydraulic tunnel, with reinforced concrete slab, cross section 3.2 x 3.75 m and temporary support with shotcrete.
Hidromanta
February 2018
Project awarded: Cerdedelo Tunnel (Spain).

OSSA has been awarded the works for the completion of the Cerdedelo tunnel, which is part of the Porticamba-Cerdedelo section of the Galician High Speed Train. The materials to be excavated are slates of poor quality. The temporary support will be based on bolts, trusses, shotcrete and canopy tubes.

 

January 2018
Project awarded: Elevators Line 5 for Metro S.A. (Chile).

The project “Engineering, Supply and Construction Elevators of Line 5 Project ” of Metro S.A. has been awarded to OSSA in consortium with the Chilean company Echeverría Izquierdo.

In order to comply with the current accessibility regulations, Metro S.A. has decided to implement elevators in all stations in the existing metro network. The project awarded to OSSA includes the implementation of 26 elevators in 9 stations.

January 2018
Los Leones Metro Station, Santiago (Chile).

OSSA has executed, in consortium with the Chilean company Echeverría Izquierdo, the Los Leones Metro Station project for Metro of Santiago (Chile). The Los Leones Metro Station combines metro Lines 1 and 6 and includes also the civil works of the station entrance.

We leave you with these amazing 360º images.

January 2018
Diversion tunnel of the Chironta reservoir (Chile).
OSSA has been chosen by the Dragados-Besalco consortium for the construction of the diversion tunnel of the Chironta reservoir (XV Region, Chile). The project consists of the execution of 440 m long tunnel cross section 8 x 8 m (58 m2) and a 37 m long cavern for the future housing of valves of section 12 x 12 m (105 m2).
December 2017
Expansion of the Bekkelaget water treatment plant (Oslo, Norway).
OSSA has completed the works for the expansion of the Bekkelaget water treatment plant (Oslo), the largest environmental project being carried out in Norway, which has involved the underground excavation of more than 445,000 m3 of rock. In the attached video you can see the magnitude of the work performed, congratulations to the entire construction team!
December 2017
Hidromanta contract awarded (Peru).
OSSA has signed contract with the Cobra group for the construction of the Hidromanta hydropower plant hydraulic tunnel in Peru. The project consists in the excavation of a 1,858 m hydraulic tunnel, with reinforced concrete slab, cross section 3.2 x 3.75 m and temporary support with shotcrete.
November 2017
Break through at the Guadalajara – Puerto Vallarta highway (Mexico).
November 2017
Opening of Metro Santiago Line 6 (Chile).
November 2017
The Chuquicamata mine underground project (Chile) on inGEOpres magazine.
November 2017
Headrace Tunnel Breakthrough
Capulin-San Pablo Hydropower Project (Costa Rica).
September 2017
Site visit to Los Leones metro station (Santiago de Chile).
August 2017
The Bekkelaget project (Norway) on Tunnel Info magazine.
August 2017
OSSA appears on CODELCO’s magazine (Chile).
July 2017
Tunnel breakthrough achieved at the Renace IV hydropower project (Guatemala).
March 2017
OSSA: working under volcanic areas in Costa Rica.
February 2017
OSSA is carrying out the construction works on a sewage treatment plant expansion in Oslo (Norway).
January 2017
Recognition of the best Comprehensive Management in Occupational Health and Safety in Chuquicamata Mine (Chile).
April 2016
Crossing natural obstacles. Wayrasencca Tunnel (Perú).