Seetech GmbH - Filter für alle Flüssigkeiten und alle Branchen
Seetech GmbH - Filter für alle Flüssigkeiten und alle Branchen
DSI Underground entwickelt, produziert und liefert innovative Produkte und Systeme für den Untertagebau – Bergbau und Tunnelbau
Seetech GmbH - Filter für alle Flüssigkeiten und alle Branchen
DSI Underground entwickelt, produziert und liefert innovative Produkte und Systeme für den Untertagebau – Bergbau und Tunnelbau
HBT GmbH - Your Single-Source Provider for Longwall Mining Solutions
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News - Mining, Tunnelling, Geotechnics, Energy

10.06.2021 (505 Clicks)

Business Finland grants Funding for Keliber’s Lithium Project

Keliber has been granted maximum EUR 708,000 from Business Finland as part of the funding granted to the BATCircle 2.0 consortium.

 

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10.06.2021 (485 Clicks)

Outokumpu appoints Tamara Weinert as President of Business Area Americas

Tamara Weinert has been appointed as President of Business Area Americas with immediate effect. She has been the Acting President of Business Area Americas and a member of Outokumpu Leadership Team since October 2020.

 

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10.06.2021 (501 Clicks)

Norwegian Data Analytics Software to smarten Predictive Maintenance in the Oil & Gas Industry

Dietsmann Smart Labs, French-based 'New Tech' branch of energy industry veteran Dietsmann, has selected Norwegian Data Analytics specialist Arundo as its partner for a breakthrough development in the Predictive Maintenance of industrial plant. Dietsmann operates and maintains Oil & Gas and Power plants for major national and international energy companies in over 20 countries. The company has successfully pioneered Predictive Maintenance as a way to maximize output, save costs and achieve more sustainable performance by improving energy efficiency and reducing emissions.

 

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08.06.2021 (450 Clicks)

ABB launches new Condition Monitoring digital Service, tailor-made for predictive Maintenance of Conveyor Belts

ABB Ability Condition Monitoring for belts collects and tracks data from conveyor belts to provide real time information about the health of the equipment, enabling planned and timely maintenance

 

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08.06.2021 (473 Clicks)

Ontario Companies power forward on Hydrogen

Partnership to pursue potential pilot projects

 

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08.06.2021 (511 Clicks)

Red Dog Mine Alaska in the USA: Ground Improvement in Permafrost


Red Dog Mine, one of the world’s largest zinc mines, is located in the north-west of Alaska, around 170 km north of the Arctic Circle and nearly 1,000 km to the north-west of Anchorage. The mine has been operating since the late 1980s with around 10% of the world's zinc extracted here in open-cast mining.

Its location in the Arctic Circle region means that the entire mine is in a geological permafrost area that keeps the ground permanently and completely frozen below a certain depth. There is an active zone near the surface that thaws during the summer and refreezes during winter. Based on an evaluation of the permafrost and soil on the site, ground improvements were identified as a prudent measure to counteract the effects of potential melting permafrost. To this end, Bauer Foundation Corp. was tasked by Teck with carrying out field tests using the jet grouting and Cutter Soil Mixing (CSM) methods.

'The trials included detailed data capture and strict quality controls in close collaboration with Teck, the project owner, and other geotechnical consulting engineers,” explains Alejandro de la Rosa Knecht, Project Manager with Bauer Foundation. “Trials were carried out from August to December of 2019, which ultimately identified the CSM method as the most suitable choice for the main scope of this project.” The CSM method combines features of the diaphragm wall technique and the mixed-in-place ground improvement method (MIP). The soil is broken up using a cutter, then rearranged and mixed with an aggregate. The trials for the Red Dog Mine also determined the extent to which existing subsoil were to be replaced with suitable filler material to facilitate later mixing.

In 2020, during the period from July to November, 50% of the pre-drilling was completed as well as 30% of the CSM. In addition, Bauer Foundation Corp. was tasked with the construction of a secant pile wall as an extension to an existing slurry wall. To achieve this, the required pile wall was integrated into the existing slurry wall and the underlying rock using primary and secondary piles. In all, 93 secant piles were constructed. A multi-purpose Bauer BG 30 drilling rig with special Arctic equipment along with various drilling tool and mixer sets were used for the execution of all the works.

One of the main challenges was the mobilization of equipment in the limited time provided by the schedule. However, the required special equipment was mobilized in record time. Some equipment was transported by plane and then by ship from Seattle Harbor across the Bering Sea to a dock just over 80 km from the mine. Other equipment was transported via Hercules aircraft from Anchorage airport to the airport on the mine site. This logistical success was made possible by close collaboration with various Bauer subsidiaries and Teck. “The remote and isolated location, the long deployment times and accommodation in camps pose additional challenges, as do the extreme Arctic climate conditions, precautionary measures associated with the corona pandemic and the specific safety requirements of the mining industry,” says Alejandro de la Rosa Knecht.

Despite all these challenges, the Bauer and client teams were able to successfully conclude trial work between August and December 2019 and the first phase of production activities between July and November 2020. The final production phase which includes CSM and demobilization is due to be completed by June 2021.

Source: Bauer Group



Bauer, USA, Mine, Geotechnics, Mining, Red Dog, Alaska, ground, improvement, permafrost, zinc, Teck, tests, jet grouting, CSM, Alejandro de la Rosa knecht, MIP, pile

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07.06.2021 (679 Clicks)

Voith Hydro and Swedish Mine Storage enter Development Partnership for the Advancement of Decarbonization

Voith Hydro, a leading global supplier of hydropower and pumped storage equipment, and Swedish company Mine Storage, a specialist in the field of underground pumped storage concepts, announce a development partnership to become the forerunners in a new market for underground pumped storage – offering so-called mine storages.

 

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07.06.2021 (513 Clicks)

Anglo American completes Demerger of Thungela Thermal Coal Business

Anglo American plc announces the completion of the demerger of its thermal coal operations in South Africa. Thungela Resources Limited will start trading today through a primary listing on the Johannesburg Stock Exchange under the abbreviated name “Thungela”, and a standard listing on the London Stock Exchange (ticker symbol “TGA”). As a leading South African thermal coal exporter, Thungela offers investors access to a high quality thermal coal business with low cash cost and high-margin assets and a strong balance sheet, underpinned by a robust ESG framework.

 

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07.06.2021 (508 Clicks)

Metso Outotec teams up with Mining and Construction Equipment Sweden and Värnamo Krosskonsult

Metso Outotec has signed a distribution contract with Mining and Construction Equipment Sweden AB and Värnamo Krosskonsult AB. The two companies will sell in cooperation Metso Outotec’s mobile and stationary crushing and screening equipment as well as crusher wear parts for the mining and aggregate customers in Southern and Central Sweden. They will also provide service support such as start-ups and repairs in the regions. The contract has come into effect in April 2021.

 

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04.06.2021 (506 Clicks)

Historic Moment as HS2 launches first giant Tunnelling Machine

  • HS2 launches ‘Florence’ – the first of 10 HS2 Tunnel Boring Machines (TBMs) that will dig 64 miles of tunnel on Phase One of the UK’s new high speed railway
  • This first 170m-long TBM – the largest ever used on a UK rail project – will dig 10 miles of tunnel under the Chilterns, operating 24/7 for the next three years
  • Transport Secretary Grant Shapps: “The tunnels these machines dig will ensure the benefits of our new high-capacity, high-speed railway run to the great cities of the North and Midlands, forging stronger connections in our country, boosting connectivity and skills opportunities, and transforming our transport links.”
 

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J. D. Theile GmbH

Informieren Sie sich über offene Stellen und Einstiegsmöglichkeiten bei CFT sowie die Ausbildungsmöglichkeiten in einem zertifizierten Ausbildungsbetrieb.
Latest Articles

03.11.2023 

From first Ideas to Implementation – Satisfaction is guaranteed when we are enthusiastic about what we construct!From first Ideas to Implementation – Satisfaction is guaranteed when we are enthusiastic about what we construct!

Enthusiasm about what we do when we build something is an important key to job satisfaction; communicating this to others, valuing people we deal with, and attracting skilled personnel in future gen...  

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Inspections of Flexible Protection Systems against Natural Hazards – Using and passing on Special KnowledgeInspections of Flexible Protection Systems against Natural Hazards – Using and passing on Special Knowledge

Inspections of flexible protection systems against natural hazards are becoming increasingly important. Geobrugg passes on its knowledge in socalled CONSIS courses to keep the function of structures...  

03.11.2023 

Brenner Base Tunnel: innovative Sandvik DT923i convinces in Blasting of the main TunnelsBrenner Base Tunnel: innovative Sandvik DT923i convinces in Blasting of the main Tunnels

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