Expert Services

Your partner in quantifying geological variability and uncertainty

CONSULTANTS

CARRIE NICHOLLS

Senior Consultant, based in United Kingdom & Europe

  • Bachelor of Science with Honours (Geology), University of Bristol, UK
  • Master of Science Mineral Resources, University of Wales
  • Member of the Australian Institute of Mining and Metallurgy (Chartered Professional)
  • Fellow of the Geological Society

Carrie’s experience has been primarily in gold and copper and began in 2000 with Anglogold Ashanti at Sadiola Gold Mine. Here she gained experience in all aspects of resource estimation, from sampling protocols, database management, QAQC and estimation using linear and non-linear methods. She was involved in test work including optimising drill spacing, sample nomogram analyses, and head grade sampling strategies. She also provided software support to grade control geologists, for both Datamine and Blockbuster and training for local geologists. Based at Geita Gold Mine, Tanzania, she provided technical services as a resource estimation geologist to Anglogold Ashanti head office for their African open pit operations and the evaluation department at Geita Gold Mine. As Senior Resource Geologist at Choco 10 in Venezuela, she was responsible for the resource estimates and supervisory to database management and QAQC personnel and technical assistance to production geologists.  At Bloy she was a Consultant to both junior and large companies from exploration through to production and assisted in software development, primarily in geostatistics.

Carrie utilises Leapfrog Geo, Datamine and Isatis software. She is also an expert user of Blockbuster software.

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CHRIS DE-VITRY

Principal Consultant, based in Brisbane, Australia

  • Bachelor of Science (Geology), Australian National University
  • Bachelor of Science with Honours (Geology), University of Western Australia
  • Master of Science (Ore Deposit Geology and Evaluation), University of Western Australia
  • Master of Science (Geostatistics), University of Adelaide
  • Member of the Australian Institute of Geoscientists (AIG)
  • Member of the Australasian Institute of Mining and Metallurgy (AusIMM)

After starting out as a geotechnician in 1989, Chris has been engaged as a geologist, mine geologist, senior mine geologist and senior resource geologist – operational experience that gives him a rare understanding of how to add value throughout the mining value chain.

Having learned from some of the best in the business, Chris also draws on a wealth of technical expertise, which he has applied in open-cut and underground scenarios in gold, copper, uranium, nickel, lead-zinc, talc, iron-ore and coal mines the world over. His expertise includes mine geology, structural geology, data-validation, geological modelling and integrating geology and geostatistics into resource models, with advanced skills in numerous mining software packages.

Chris utilises Leapfrog Geo, ioGAS, Vulcan, Isatis and Minesight software.

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IGNACIO TORRESI (NACHO)

Consultant, based in Santiago, Chile

  • Bachelor of Geosciences with Honours (Geology), UNICAMP University, Brazil
  • Master in Sciences in Economic Geology and Metallogenesis, UNICAMP University, Brazil

Since graduating in 2006, Ignacio (Nacho) worked in exploration, geological modelling, resource/reserves evaluation and operations for a major mining company across Latin America and Asia Pacific. His main field experience comes from working in the Amazon, New Guinea and Central Australia. His primary focus was copper and gold, lead and zinc, iron ore and lateritic deposits. Arriving in the Amazon in 2008 he assisted in the delineation of several deposits that are now in production. Later in Papua New Guinea he worked in several green field and feasibility projects, stepping into the position of Lead Geologist for that company. Later he worked in operation and resource/reserve evaluation in the Mount Isa inlier. He started working for Leapfrog in 2013, having been a user since 2010. Ignacio is now ARANZ Geo’s Regional Director for Latin America, helping to grow that market and giving valuable feedback for the development of new features and software.

Nacho utilises Leapfrog Geo, Vulcan, Whittle, MapInfo, and ioGAS.

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MIKE JOB

Senior Principal Consultant, based in Perth, Australia

  • Bachelor of Science, Macquarie University, Australia
  • Master of Science, University of Alberta, Canada
  • Fellow of the Australasian Institute of Mining and Metallurgy (AusIMM)

On graduating in 1984, Mike began his career in the petroleum industry, before switching to mining, exploration and resource geology, tackling a range of roles across Australia.

Having worked for large and small mining companies, his technical and managerial experience encompasses an array of commodities and everything from geological mapping, resource modelling and grade control program design, to drill rig supervision and the management of geology teams in open-cut and underground environments. Mike's key areas of specialisation are geological data gathering and interpretation, audits, resource estimates and conditional simulations to quantify risk – he is passionate about geological resource estimates that are practical, robust and auditable.

Mike utilises Leapfrog Geo, ioGAS, Datamine and Isatis software.

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MIKE O'BRIEN

Senior Principal Consultant, based in Vancouver, Canada

  • Bachelor of Science with Honours (Geology), University of Natal, South Africa
  • Masters of Science (Engineering), University of the Witwatersrand, South Africa
  • Fellow of the Australasian Institute of Mining & Metallurgy (AusIMM)
  • Fellow of the South African Institute of Mining and Metallurgy (SAIMM)
  • Fellow of the Geological Society of South Africa (GSSA)

Over a career of more than 30 years, Mike has become a well-respected thought leader in the geology and mineral resources sector and prides himself on building unique and practical geoscience solutions for clients. Prior to joining QG, he spent 1 year at AMEC as Principal Technical Specialist, 2 years with Tetra Tech as Chief Geologist, 13 years with AngloGold Ashanti after a period of 19 years with Anglo American Corporation. Mike was Chairperson of the SAMREC Committee in 2010/11 and served on the SAMREC Committee from 1996 to 2011. Consequently he is well versed in the details of mineral resource and reserve terminology and international reporting and regulatory codes.  Mike has reviewed numerous mineral resource models and managed technical teams across the Americas, Africa, Europe and Asia.

Mike utilises Leapfrog Geo, ioGAS and Isatis software.

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Michael Rohwer

Senior Consultant, based in George, South Africa

  • Master of Science (Geology) – Nelson Mandela Metropolitan University
  • Professional Natural Scientist, SACNASP
  • Member of the Australasian Institute of Mining and Metallurgy (AusIMM)
  • Member of the South African Institute of Mining and Metallurgy (SAIMM)
  • Member of the Geological Society of South Africa
  • Fluent in English and German

Michael, originally a structural geologist with the Council for Geoscience (Geological Survey), has extensive experience in the exploration, mining and consultancy industry. Joining Bloy in 2011 enabled honing of his complimentary expertise in evaluation, grade control and geostatistics, within the latter parts of the Exploration & Mining cycle. His experience spans a spectrum of commodities including Au, Cu, Ni, U and PGEs across eastern, western, southern and central Africa, as well as Australia. Projects include work with AngloGold Ashanti, Anglo Platinum, Areva, Kumba Iron Ore, Endeavour Mining, Auryx Gold, Swakop Uranium, QKR, Mwana Africa PLC, Craton Mining & Exploration Pty Ltd, and others.

Michael utilises Leapfrog Geo and is an expert user of Datamine and Blockbuster grade control software.

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MICHAEL STEWART

Senior Geological Advisor, based in Christchurch, New Zealand

  • Bachelor of Science (Geology), Canterbury University, New Zealand
  • Master of Science with Honours, Canterbury University, New Zealand
  • C.F.S.G. Geostatistics, Ecole Nationale Supérieure des Mines de Nancy, France
  • Member of the Australasian Institute of Mining and Metallurgy (AusIMM)
  • Member of the Australian Institute of Geoscientists (AIG)

Michael’s career in mining and applied geology began in 1988 in New Zealand. Since then, he has developed his expertise in geological modelling, resource geology and geostatistics in a host of capacities all over the world.

As a consulting geologist and geostatistician providing the full range of resources estimation, reconciliation, grade control, audit, due diligence and business consultancy, he has applied his skills in a diverse range of open-pit and underground mining environments. His areas of specialist expertise include: the numerical modelling of resources; the classification and reporting of resources under JORC and NI 43-101; and sampling and management of data quality, including training and mentoring in this highly specialised area.

Michael utilises Leapfrog Geo, ioGAS, Minesight and Isatis software.

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NIKLAS SÄÄV

Consultant, based in Silkeborg, Denmark

  • Bachelor of Science (Mining Engineering), Bergskolan, Sweden

Niklas started his career in a small mining company and was involved in many tasks ranging from production loading and RC drilling supervision to short term mine planning in open pit and database management for drillhole data. Niklas was also involved in resource work and day to day workflow improvements. Now a highly proficient Leapfrog Geo user his focus is to bring the model to the next stage in the process as efficiently as possible.

Niklas utilises Leapfrog Geo, Supervisor, ioGAS, Deswik and various database tools.

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Rui Goncalves

Consultant, based in George, South Africa

  • BSc (Hons) Geology – University of Pretoria
  • Professional Natural Scientist, SACNASP
  • Fluent in English and Portuguese

Rui’s career began with Anglo American Platinum where he studied under their training scheme whilst gaining experience in platinum mining. After graduating he worked as a consultant on a Kenyan Niobium and REE project, eventually becoming the on-site geologist. He joined Bloy in 2012, gaining experience in evaluation, grade control and geostatistics. In 2014 he assisted with the initial set up and conversion of the Surpac version of Blockbuster. Since 2015 he has modelled different types of deposits using Leapfrog and integrated many of these with Blockbuster grade control.

Rui utilises Leapfrog Geo, Datamine and Surpac software and is an expert user of Blockbuster grade control software.

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Tiegoum Traore

Senior Consultant, based in West Africa

  • Bachelor of Science with Honours (Geology) - University of Mali
  • Member of the Australasian Institute of Mining and Metallurgy (AusIMM)
  • Fluent in French and English
  • Graduate Diploma in Engineering in Resource Evaluation, Wits University
  • Management Program (IMDP) at University of Cape Town (UCT-GSB)

Tiegoum’s experience in mining has been gained working mostly for AngloGold Ashanti in the grade control/production environment and Resource Evaluation in Mali, Senegal and Tanzania.  He’s applied best practice in ore extraction, ore accounting, reconciliation (mine to mill), and Resource estimation. He has honed his leadership skills and experience working with mining engineers, (short and long term plan), blast engineers and metallurgists. He is an experienced coach and mentor with strong project and cost management skills. On joining Bloy in 2015 he has added value to mine sites such as Iduapriem, Morila, Sadiola, Siguiri, Tabakoto and Ity.

Tiegoum utilises Leapfrog Geo, Datamine, Surpac and Vulcan and is an expert user of Blockbuster grade control.

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OUR CLIENTS

Our clients include the world’s leading mining companies, investors and advisors.

Expertise spans from base and precious metals to bulk commodities and specialist minerals. Mining company clients include major, multi-commodity, international mining organisations to mid-tier or small independents.

Some of our clients include: