Mining & Management Consulting

Company

With over 25 years of experience in mining industry, we are your expert partner for your cost-effective solutions in all mining-stages.

Dr. Hollenberg Consulting (DHC) was founded in Oberhausen in 2009 by Prof. Dr. Thomas Hollenberg. He currently serves as Senior Consultant of DHC.

We specialise in innovative mining engineering solutions and in supporting business of all sizes. After a decade of growth, we make positive impact on a global scale, operating in a total of 11 countries.

We are also proud to be directly involved with the Mining Technology Universities.

Our Management Team

We are a team of doers who achieve their goals with passion.

Prof. Dr.-Ing. Thomas Hollenberg

Senior Consultant / Senior Mining Engineer

th@dr-hollenberg.com

Dipl. Kffr. Sarangoo Khadaa

Consultant / Business Analyst

sk@dr-hollenberg.com

Our Partners

We are pleased to work with professional partners. Those who work with us globally include:

Compliance

Mutual respect and fairness in our dealings with each other and with our business counterparts are the foundation of our company culture. Through our Compliance System (CS), we enshrine within our company appropriate measures with the aim of adhering to German and international legislation, voluntary in-house commitments and our internal guidelines. The Management takes the subject of compliance very seriously and expects to see it lived out and applied wholeheartedly by all our staff members and business partners. We have a zero-tolerance policy for any illegal activities or violations of our CS. This particularly applies to any form of misconduct such as fraud, corruption, collusion, coercion or obstruction. In our opinion, conduct in conformity with the rules is a vital cornerstone for long-term safeguarding of our business model.

Our Publications

We produce a variety of publications reflecting our commitment to excellence. Most of these publications, both historical and new, are freely available.

  • Mongolia – a Partner to secure German Needs for Raw Materials
    GeoResources Journal 2-2023; ISSN / Online 2364-8430; Print 2364-8422; georesources.net
  • Marktstudie Transport und Logistik Mongolei 2023
    Issued and published by Deutsch-Mongolischer Unternehmensverband (DMUV), May 2023
  • The Mongolian Raw Materials Industry;
    Published in the “Yearbook of Sustainable Smart Mining and Energy - Technical, Economic and Legal Framework” by Springer Verlag in March 2023, ISBN 978-3-031-41872-3, ISBN 978-3-031-41873-0 (eBook)
  • Educating engineers for the development of Mongolia
    Paper presented at the 11th SOMP Regional Meeting, Hanoi, Viet Nam 11 – 12, October, 2022
  • Educating world-class engineers for the development of Mongolia
    Paper presented at the 32nd SOMP Annual Meeting and Conference, Windhoek, Namibia,12-14 September 2022, published by the Southern African Institute of Mining and Metallurgy, 2022
    Conference Proceedings ISBN 978-1-928410-33-1
  • Mining in Mongolia 2021 – Ten Years after the German- Mongolian Raw Materials Agreement.
    Mining Report Glückauf 158 (2022) No. 3
  • Optimisation of Energy Consumption and Supply in Mining and Processing within Skorpion Zinc Mine - A Case Study
    Mining Report Glückauf 2019
  • Enhancing Sustainability of Minerals Engineering Programmes through the Development of a Minerals Resource Centre
    Paper presented at the Society of Mining Professors 6th Regional Conference, Johannesburg, SouthAfrica, 12-13 March 2018
  • Sustainable Approach to Energy Consumption and Supply in Mining and Processing: A Case Study within Namibia Skorpion Zinc Mines
    Publication in “SME Annual Transactions Volume 2018”
  • Sustainable Approach to Energy Utilization and Generation in Namibian Base Metal Mines
    Paper presented at the International Conference on Geology, Mining, Mineral and Groundwater Resources of Sub-Saharan Africa: Opportunities and Challenges Ahead in Livingstone, Zambia, July 11-13, 2017
  • Optimization of Energy Consumption in Namibia Skorpion Zinc Mines – A Case Study
    Paper presented at the 28th SOMP Annual Meeting and Conference in Torino, Italy, July 3-6, 2017
  • Logistical challenges during the development of an underground Coal Mine in Turkey
    Presentation at the 7th Materials Handling Conference in Clausthal-Zellerfeld, Germany 20th and 21st January 2016
  • Reserve Evaluation Yayaköy Lignite Deposit, Turkey
    Presentation at the Aachen International Mining Symposia AIMS 2015, Aachen, Germany 27 – 28 May 2015
  • Kohlereichtum und Energiebedarf in Mosambik
    Presentation at the Reserve Conference Africa in Goslar, Germany, 10th October 2014
  • Förderung von Konstruktionsbeton über Rohrleitungen zur Qualitätssicherung eines Wasserdamms
    (Transportation of Concrete via Pipelines for the Quality Assurance of a WaterDam)
    Glückauf 142 (2006), Nr. 3
  • Verfüllen der Gipsgrube Haßmersheim der HeidelbergCement AG, unser Betrieb Werkzeitschrift der Deilmann-Haniel-Gruppe, Ausgabe 79 Dezember 2002
    (Backfilling of the Gypsum Mine "Haßmersheim", owned by Heidelberg Cement AG, unser Betrieb Werkzeitschrift der Deilmann-Haniel-Gruppe, Ausgabe 79 Dezember 2002)
  • Einbringen von 12.600 m API-Rohrleitungen in den Schacht Lercheunser, Betrieb Werkzeitschrift der Deilmann-Haniel-Gruppe, Ausgabe 79 Dezember 2002
    (Installation of 14,000m Self-Supporting API Pipes in the Shaft 'Lerche', unser Betrieb Werkzeitschrift der Deilmann-Haniel-Gruppe, Ausgabe 79 Dezember 2002)
  • Verwahrung der Flutungseinrichtungen für das Bergwerk Niederröblingen, Heitkamp-Mitteilungen 1997
    (Safeguarding Measures for Flooding Devices in the Mine "Niederröblingen", Heitkamp-Mitteilungen 1997)
  • Teufen des 463 m tiefen Lüftungsschachts für den Schmittentunnel in Zell am See, Glückauf 133 (1997), Nr. 6
    (Sinking of a Ventilation Shaft of 463 m Depth for the "Schmittentunnel" at City Zell am See, Austria, Glückauf 133 (1997), No. 6)
  • Bau des 465 m tiefen Lüftungsschachtes für den Umfahrungstunnel der Stadt Zell am See, Straßen-und Tiefbau 51 (1997), Nr. 5
    (Sinking of a Ventilation Shaft of 463 m Depth for the Bypass of the City Zell am See, Austria, Straßen-und Tiefbau 51 (1997), No. 5)
  • Umfahrung der Stadt Zell am See in Österreich – Teufen eines 463 m tiefen Lüftungsschachtes, Tiefbau 1997, Nr. 1
    (Bypass around the City of Zell am See, Austria - Sinking of a Ventilation Shaft of 463 m Depth, Tiefbau 1997, No. 1)
  • 465 m Gleitbeton – Herstellung der Innenschale des Lüftungsschachtes "Schmittentunnel" in Zell am See, Heitkamp Mitteilungen 1996
    (Construction of 465 m of Shaft Lining for the "Schmittentunnel" by Sliding Forms, Heitkamp Mitteilungen 1996)
  • Teufen des Lüftungsschachtes „Schmittentunnel“ in Zell am See, Heitkamp Mitteilungen 1995
    (Sinking of a Ventilation Shaft for the Schmittentunnel at Zell am Sellafield, Austria, Heitkamp Mitteilungen 1995)
  • International Mining – Aufbau eines Planungsbüros in Großbritannien, Heitkamp-Mitteilungen 1994
    (International Mining - Establishment of a Consultancy Office in Great Britain, Heitkamp-Mitteilungen 1994)
  • Nachträgliche Basisabdichtung von Altlasten mittels Schildvortrieb, Straßen und Tiefbau 1994, Nr. 9
    (Subsequent Installation of a Base Sealing for Contaminated Soils by Shield Driving, Straßen und Tiefbau 1994, No. 9)
  • The Design of a Rock Characterisation Facility at Sellafield
    Presentation at the RECOD `94 in London, GB 24th to 28th April 1994
  • Basisabdichtung von Altlasten mittels bergmännischer Unterfahrung, Heitkamp Mitteilungen 1993
    (Installation of a Base Sealing by Undermining, Heitkamp Mitteilungen 1993)
  • An Environmental Application of Tunneling and Mining Techniques, Tunnels and Tunneling 1993, No. 12
  • Computer Aided Tunneling
    Presentation at the 2nd International Symposium on Mine Mechanization and Automation, Lulea, Schweden, 7th –10th June 1993
  • Altlastensicherung mittels bergmännischer Unterfahrung
    Abdichtung von Altlasten – Stand und Möglichkeiten, EF-Verlag GmbH, Berlin 1993
    (Remediation of Hazardous Waste Sites - Current Situation and Opportunities, EF-Verlag GmbH, Berlin 1993)
  • An Environmental Application of Mining Techniques – Excavation and Sealing under Hazardous Waste Sites
    Presentation at the ISDT Conference in Las Vegas, Nevada 3rd to 7th May 1993 veröffentlicht in Erzmetall 46 (1993), Nr. 7/8
  • Logistik bei der bergmännischen Unterfahrung von Altlasten, Glückauf 129 (1993), Nr. 5
    (Logistics in Undermining of Contaminated Soils, Glückauf 129 (1993), No. 5)
  • Verfahren zum nachträglichen Einbringen einer Basisabdichtung mittels bergmännischer Unterfahrung zur Vorbereitung von Altlastensanierungen, Müll & Abfall 1993, Nr. 4
    (Methods for Subsequent Installations of Base Sealings by Undermining as a Preparation of Mine Remediations, Müll & Abfall 1993, No. 4)
  • Basisabdichtung von Altlasten mittels bergmännischer Unterfahrung, Glückauf 129 (1993), Nr. 3
    (Base Sealing of Contaminated Soils by Undermining, Glückauf 129 (1993), No. 3)
  • Computergesteuerte und – überwachte Vollschnittmaschine, Erzmetall 46 (1993), Nr. 2
    (Computer controlled and monitored Roadheader, Erzmetall 46 (1993), No. 2)
  • Jahrestagung des Institute of Shaft Drilling Technology, Glückauf 129 (1993), Nr. 2
    (Annual Meeting of the Institute of Shaft Drilling Technology, Glückauf 129 (1993), No. 2)
  • Bergmännische Verfahren zur Basisabdichtung von Altlasten, Abfallwirtschaftsjournal 5 (1993), Nr. 1
    (Mining Methods for Base Sealing of Contaminated Soils, Abfallwirtschaftsjournal 5 (1993), Nr. 1)
  • Grundlagen des computergesteuerten Schachtbohrens, Glückauf Forschungshefte 53 (1992), Nr. 6
    (Basics of Computer-Controlled Shaft Drilling, Glückauf Forschungshefte 53 (1992), No. 6)
  • Verfahren zum nachträglichen Einbringen einer Basisabdichtung mittels bergmännischer Unterfahrung zur Vorbereitung von Altlastensanierungen, Tiefbau Berufsgenossenschaft TBG 104 (1992), Nr. 11
    (Methods for The Subsequent Installation of Base Sealings by Undermining as a Preparation for Mine Remediation Measures, Tiefbau Berufsgenossenschaft TBG 104 (1992), No. 11)
  • Bergbau als Vorbild – Verfahren zum nachträglichen Einbringen von Basisabdichtungen, Umwelt Magazin Nr. 10, 1992
    (Mining as a Model Example -Methods for the Subsequent Installation of Base Sealings, Umwelt Magazin Nr. 10, 1992)
  • Verfahren zum nachträglichen Einbringen einer Basisabdichtung mittels bergmännischer Unterfahrung zur Vorbereitung von Altlastensanierungen
    Management zur Sanierung von Rüstungsaltlasten, EF-Verlag GmbH, Berlin 1992
    (Methods for The Subsequent Installation of Base Sealings by Undermining as a Preparation for Mine Remediation Measures,
    Management zur Sanierung von Rüstungsaltlasten, EF-Verlag GmbH, Berlin 1992)
  • Konsolidierung der Streckenstöße im Bohrkopfbereich von Vollschnittmaschinen, Glückauf 128 (1992), Nr. 10
    (Consolidation of Roadway Walls in the Vicinity of the Drill Head of Roadheaders, Glückauf 128 (1992) No. 10)
  • Erfahrungen mit Unterfahrungen – Nachträgliches Einbringen einer Basisdichtung, Umwelt & Technik 15 (1992), Nr. 9
    (Experience in Undermining - Subsequent Installation of Base Sealing Systems, Umwelt & Technik 15 (1992) No. 9)
  • Nachträgliche Basisabdichtung durch bergmännische Unterfahrung, Wasser-Luft-Boden 1992, Nr. 9
    (Installation of Base Sealing Systems by Undermining, Wasser-Luft-Boden 1992, No. 9)
  • Steuerung und Überwachung eines Vollschnittmaschinenvortriebes vom Tage, Glückauf 128 (1992), Nr. 9
    (Steering and Supervision of a Roadheader, Glückauf 128 (1992), No. 9)
  • Computer aided steered blind shaft drilling
    Presentation at the ISDT Conference in Las Vegas, Nevada 11th to 14th May 1992
  • Steering a TBM from above ground
    Presentation at the ISDT Conference in Las Vegas, Nevada 11th to 14th May 1992
  • New lining systems for blind drilled shafts under influence of mining
    Presentation at the ISDT Conference in Las Vegas, Nevada 24th to 26th April 1991
  • Oberflächennaher Tunnelbau in Bergsenkungsgebieten, Glückauf 127 (1991) Nr 11/12
    (Near-Surface Tunnel Construction in Mining-Subsidence Regions, Glückauf 127 (1991) No. 11/12)