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crirsco members

JORC (Australasia)
CBRR (Brazil)
CIM (Canada)
Comision Minera (Chile)
PERC (Europe)
KAZRC (Kazakhstan)
MPIGM (Mongolia)
NAEN (Russia)
SAMCODES (South Africa)
SME (United States of America)



Ian Goddard
JORC, Australasia
Past Chair

Harry Parker
Deputy Chair

Neil Wells
PERC, Europe

Ken Lomberg
SAMREC, South Africa
  Deputy Secretary

Ian Douglas


Peter Stoker
JORC, Australasia

Thomas L Brenner
CBRR, Brazil

Edson Ribeiro
CBRR, Brazil

Deborah McCombe
CIM, Canada

Paul Bankes
CIM, Canada

Hans Göpfert (CM, Chile)
CM, Chile

Guillermo Muller
Comision Minera, Chile

Eddie Bailey
PERC, Europe

Saule Urazayeva
KAZRC, Kazakhstan

Nikolai Yenshin
KAZRC, Kazakhstan

Bat-Erdene Dash
MPIGM, Mongolia

Oyungerel (Gerlee) Bayanjargal
MPIGM, Mongolia

Grigoriy Malukhin
NAEN, Russia

Oleg Ilyin
NAEN, Russia

Roger Dixon
SAMREC, South Africa



  Ian Goddard (JORC, Australasia)

Ian graduated from The University of Queensland with a first class degree in Mining Engineering and an Economics degree. He also has a Master of Science with Distinction from the University of London (RSM). He was until recently a Director of Kumul Minerals Holdings Limited (formerly Petromin Holdings (PNG) Limited), an entity of the State of Papua New Guinea, holding equity in resource projects.

Most of Ian's career was with MIM Holdings Limited, where his last position was Managing Director of the listed subsidiary Highlands Gold Limited for nine years. Since that time, he has filled board roles in a variety of organisations and provided consultancy services to companies, mainly in the mining sector. He has wide experience in joint ventures, raising capital and the management of minerals companies.

In 2002 and 2003, he was elected President of the Australasian Institute of Mining and Metallurgy, the society for professionals in the minerals industry. Altogether, he was on the Council and Board of The AusIMM for 14 years. He is an Honorary Fellow of that Institute, and a Chartered Professional (Management), a Fellow of the Australian Institute of Company Directors, a Member of the PNG Institute of Directors and a member of the Joint Ore Reserves Committee (JORC).

  Harry Parker (SME, USA)

Harry has multiple degrees from Stanford and Harvard University and has had a long and successful career in mine geology and geostatistics. He is currently Technical Director of AMEC and is responsible for resource modelling, auditing and the provision of Competent Persons’ reports. The breadth of Harry’s activities is illustrated by his extensive range of publications and by his membership of eleven professional organizations, both in the USA and overseas. He is a Registered Geologist in the States of California and Arizona, a Registered Member of the SME and a Fellow or Member of the AusIMM, Society of Economic Geologists, IMMM, AIG, GSA, IAMG, CIM and ФВК.

Harry brings an international perspective to the requirements for resource and reserve reporting under various regulatory regimes and is well versed in the similarities – and differences – of these requirements. As a Competent Person and independent auditor Harry provides CRIRSCO with an extensive knowledge of estimation and reporting issues.

  Neil Wells BSc (Hons) ARSM MSc CEng FIMMM EurGeol CGeol FGS FIQ (PERC, Europe)

With a degree in Mining Geology from the Royal School of Mines, Neil started his professional career in the late 1980s in mineral exploration projects, initially working in Canada in the search for platinum-group elements and then subsequently in Botswana with De Beers, engaged in the prospecting and evaluation of primary diamond deposits. Since the early 1990, working for several consulting firms and completing a Master’s Degree in Mineral Industry operations in the Mining Department of the University of Leeds, Neil developed expertise in the evaluation and assessment of construction materials for the aggregates, cement and industrial clay sectors and the preparation of development plans to support their efficient and economic extraction. He also gained experience in the coal industry, preparing geological models and mine plans for underground and surface workings.

In 2008 Neil joined Hanson UK (part of the HeidelbergCement Group) as the Geological Services Manager, directing and supporting assessments and reporting of reserves and resources and advising on development planning. In 2010, he took over responsibility for the oversight of geology and land management practices supporting HeidelbergCement’s Western European, African and Mediterranean Basin operations. In 2013, Neil was appointed as Head of Global Land & Minerals for the aggregates business line of HeidelbergCement, with responsibility for the development and implementation of Group policy and practices relating to land management, reserves and resources estimation and quarry development planning for its operations worldwide.

Having previously represented the quarrying industry in discussions with regulatory bodies in both the UK and in Europe on matters ranging from reserves reporting to management of mineral wastes, Neil was co-opted to PERC in 2012 to provide particular input on the reporting of construction materials and industrial minerals. He has been the Vice-Chair of PERC since 2014.

Ken Lomberg BSc(Hons) Geology, BCom, MEng, Pr.Sci.Nat.
(SAMREC, South Africa)

Ken has 27 years experience in the minerals industry (specialising in the platinum and gold sector). He has extensive experience in exploration and mine geology and has a proven track record in developing early stage projects to full mine production. His skill set provides expertise in the project management, mineral reserve and resource estimation fields.

Ken has undertaken mineral resource and reserve estimations and reviews for platinum, gold, copper, uranium and fluorite projects. He has assisted with the reviews or estimation of diamond and coal projects. He has assisted or compiled Competent Persons Reports/NI 43-101 for various projects that have been listed on the TSX, JSE and AIM stock exchanges.

  Ian H Douglas (SME, USA)

Ian has degrees in geology and ore deposits from UCLA and Stanford University. He has over 30 years' experience in geology and mining. His career has spanned grassroots exploration, development, operations, consulting, corporate governance and independent review of major capital investments. He is currently with Newmont Mining Corporation as Group Executive Value Assurance. Prior to Newmont, he has worked for Utah International, USGS, Noranda Exploration, Meridian Gold, FMC, Independence Mining, and MRDI consulting.

Ian has helped develop and implement an independent review system for Newmont's major capital project investments, focusing on work needed and completed for appropriate evaluation of gated decisions in Newmont's Investment System. He also led and implemented Newmont's Reserve and Resource governance model and was responsible for Newmont's annual Resource and Reserve disclosures between 2001 and 2013. He is a current and active member of SME, acting Chairman of the Registered Member Committee and co-Chairman of the Reserve Committee. He helped update the 2007 and 2014 SME Guidelines, focusing his efforts on updated definitions of Resources and Reserves.

Ian has a family mining legacy as a 5th consecutive generation mining geoscientist that started with his great-great grandfather James Douglas's discovery of the Copper Queen mine in Bisbee Arizona.

  Peter T Stoker (JORC, Australasia)

Peter is a geologist with over 30 years experience in mine geology, mineral resource and ore reserve estimation, feasibility studies, project evaluation and mineral exploration. Prior to joining AMC Consultants Pty Ltd in April 2003 he ran his own business as an independent consultant. From 1992 to 1996 he was a General Manager in MIM Exploration with responsibility for technical services and Mineral Resource and Ore Reserves reporting for the MIM Holdings group of companies. Formerly Chief Geologist at Mount Isa Mines Limited he was also director of a junior exploration and mineral treatment technology company.

Peter is a Fellow of the Australasian Institute of Mining and Metallurgy and a Chartered Professional - Geology. He is past Chair of the AusIMM’s Geoscience Taskforce and a past Councillor, branch chairman and secretary. He is the current Chairman of the Joint Ore Reserves Committee and was Secretary from late 1999 to 2005. He was a member of the Steering Committee and a contributor for Monograph 23 “Mineral Resources and Ore Reserves Estimation – The AusIMM Guide to Good Practice” and has authored or co-authored a number of papers on Mineral Resource and Ore Reserve estimation, classification, exploration research and practice.

  Thomas L Brenner (CBRR, Brazil)

Thomas is a geologist with over 30 years experience in mineral exploration and mining industry, with expertise in mine geology, mineral resource and mineral reserve estimation, database, QA/QC, grade control, reconciliation and project evaluation, due diligence and feasibility studies. He has been involved in a wide variety of ore type deposits including gold, copper-lead-zinc, nickel sulfides and laterites, bauxite and coal.

Thomas graduated from Universidade Federal do Rio de Janeiro, Brazil in Geology and holds a PhD degree in Geology from Universidade Estadual Paulista, Brazil. Prior to joining Votorantim Metais in 2004 he was a senior exploration geologist and head of Geology and Mine Planning at Fortaleza de Minas Mine for Rio Tinto Brazil. From 1982 to 1989 he was an exploration geologist and head of exploration projects in BP Mineral for gold, base metals and nickel, which resulted in the discovery of a nickel sulfide deposit.

Thomas is a Member of the Australasian Institute of Mining and Metallurgy since 1998 and has participated in the provision of Competent Person’s reports for Rio Tinto and Votorantim Metais. He is currently responsible for the CBRR Technical Committee that prepared the CBRR Guide in 2015. He is member of the Action Group for Votorantim Metais Internal Commission of Resource and Reserves.

  Edson Ribeiro (CBRR, Brazil)

Edson Ribeiro has over 28 years of experience in the mining industry, having devoted most of his career to the evaluation of mineral resources covering a broad range of ore types and deposit styles. Graduated with a B.Sc. Degree in Geology at the University of Säo Paulo in 1987, he obtained his M.Sc. degree in Metalogenesis at University of Campinas (Säo Paulo, Brazil) in 1994.

Edson joined Vale S.A. in 1993 and, besides resource evaluation, along his career he has also been responsible for mineral projects engineering, process development, economic evaluation, strategic planning, business development, technological innovation and mineral exploration. As a technical leader and Vale executive, he has participated in several due diligences, M&A processes and international tenders, and has been a Board Member of Vale-controlled companies and Joint Ventures.

Currently leading the Exploration and Mineral Projects area, Edson is responsible for conducting greenfield exploration and pre-feasibility studies within the Company. He is also responsible for the coordination of Vale's Global Committee for Mineral Resources and Mineral Reserves.

Edson is the current president of ADIMB (the Brazilian Agency for Technological Development of the Mining Industry), a founder of CBRR (Brazilian Commission for Resources and Reserves), a Member of the Australian Institute of Geoscientists (AIG) and the Society for Mining, Metallurgy and Exploration (SME) and a Fellow of the Australian Institute of Mining and Metallurgy (AusIMM).

  Deborah McCombe, P. Geo. (CIM, Canada)

President and Principal Geologist
Roscoe Postle Associates Inc.

Deborah McCombe is a Professional Geoscientist with 30 years of domestic and international mineral exploration and mine development project experience. Ms. McCombe has focused on due diligence reviews, exploration projects, reserve estimates, feasibility studies and valuations in connection with mergers and acquisitions. Prior to joining Roscoe Postle Associates, Ms. McCombe was Chief Mining Consultant for the Ontario Securities Commission. She was involved in the development and implementation of NI43-101 Canadian Disclosure Standards for Mineral Projects.

Deborah is actively involved in industry associations as Chair of Committee for Mineral Reserves International Reporting Standards (CRIRSCO) – (CIM Canada); President of the Association of Professional Geoscientists of Ontario (2010-2011); a Director of the Prospectors and Developers Association of Canada (1999-2011) and Chair of the PDAC International Affairs Committee; past Chair of the Toronto Branch of the Canadian Institute of Mining, Metallurgy and Petroleum; a CIM Distinguished Lecturer on National Instrument 43-101 and a member of the CIM Standing Committee on Reserve Definitions.

  Paul Bankes (CIM, Canada)

Paul graduated from the University of Western Ontario in Geology and has over 30 years of domestic and international experience in project development, mine operations, geostatistics, mine design, business development and consulting. Most of Paul's career was spent with Teck Resources Limited; where his last position was Director Reserve Evaluations. Paul is a member of the Canadian Institute of Mining, Metallurgy and Petroleum (CIM) and a licensed professional geoscientist with the Association of Professional Engineers and Geoscientists of British Columbia.  In 2002 and 2003, he served on the Best Practice Committee which prepared CIM Best Practice Guidelines for the Estimation of Mineral Resources and Mineral Reserves. Paul is currently chairperson of the CIM "Standing Committee on Mineral Reserve and Mineral Resource Definitions".

  Hans Göpfert (CM, Chile)

Hans has a degree in Mining Engineering from Universidad de Chile and has been active for more than 40 years. He is Consultant for Amec Foster Wheeler where he has held different engineering and project management positions since 1997.

Hans has experience in the evaluation, design, development, construction and operation of mining and tunnelling projects, mainly at mines in Chile, but as well in Brazil, Peru and Colombia.  He has been involved in both underground (mainly block caving) and open-pit mines, the assessment of infrastructure requirements (water, power, roads, camp, etc), and evaluation of the technical and economic feasibility of new ventures.

He has acted as QP for several NI 43-101 documents as well as Chilean Law 20551 (mine closure) reports.

  Eddie Bailey BSc (Hons) Exeter, CGeol, FGS, EurGeol, FIQ (PERC, Europe)

Eddie began his career in aggregate geology with English China Clays Quarries Ltd in 1986. He moved to Tarmac Ltd in 1989 becoming Head of Geology UK and International in 2005. He joined Aggregate Industries Europe in 2008 and is currently Head of Geological Services.

Eddie is a founder member of PERC. He is married to Lyn (a Chartered Physiotherapist) and has two sons Harry and Jack.

  Saule Urazayeva, KAZRC, Kazakhstan

Saule Urazayeva has over 35 years' experience in the minerals and petroleum industries, having graduated graduated with honors from the Moscow Geological Exploration Institute in 1979. Her specialty was as a Mining Engineer-Geophysicist and she obtained her PhD in 1997.

Until 1997, she was a Geophysicist in the State Geophysical Organizations, head of the Department of Scientific and Technical information of Technical Research Center KAZNEDRA, and CEO of The Information and Analytical Center "Mineral Resources of Kazakhstan".

The next role was Head of the Department of Planning of Ecological Projects of the Ministry of Natural Resources of Kazakhstan, responsible for the systematization, planning and monitoring of implementation of ecological projects. Saule next was Director of the Department of Geology and Geophysics, Department of New Projects, Department of Geology and Development in the National company JSC Kazakhoil / JSC Oil Company KazMunaiGas (KMG).

From 2003 until 2011, she was Chairman of the Board of JSC KAZGEOKOSMOS, which was involved with remote sensing and airborne surveys for exploration and ecological projects.

In 2012 she became Head of the Republic Center of Geological Information "Kazgeoinform" of the Committee of Geology and Subsoil Use, Deputy Chairman of the Committee of Geology and Subsoil Use and Deputy CEO of National exploration company Kazeology.

She is Adviser to CEO of Kazgeology, the independent adviser to Minister for Investments and Development of Kazakhstan on geology and subsoil use matters and since 2015, Executive Director of KAZRC Association, member of Advisory Council on geology and subsoil use at the Ministry of investments and Development of RK and company member of PONEN (Public Association "The Professional Association of Independent experts in subsoil use of the Republic of Kazakhstan"). Saule is also a member of SME.

PONEN has been involved in the development of national standards of public reporting of exploration results, mineral resources and reserves in compliance with the CRIRSCO template and the development the proposals for improvement of legislation in the sphere of geological survey and subsoil use.

  Nikolai Yenshin, KAZRC, Kazakhstan

Nikolai Yenshin is the General Manager of SRK Consulting (Kazakhstan). Prior to joining SRK in 2007, he had worked for 10 years on Glencore and Barrick Gold mining operations in Kazakhstan and Russia. He specializes in strategic planning and evaluation of mines, mine performance improvement management, and underground mine design, as well as implementation of new technologies. Nikolai has worked on such minerals as zinc, lead, tin, gold, uranium, bauxite, etc.

In SRK Nikolai has taken part in projects ranging from geological exploration to Scoping, Pre-Feasibility and Feasibility Studies, as well as project commissioning stage and Due Diligence. He was a Project Manager on several uranium projects of various levels in Russia and Kazakhstan, as well as managed extensive exploration projects in Guinea and Namibia.

Nikolai was among the initiators and organizers of the Kazakhstan Mining Club in 2011. Since 2014, he is actively involved in the development of the Kazakh Code of Public Reporting on Mineral Resources and Reserves (KAZRC). He was among the founders of the Professional Union of the Independent Subsoil Experts of Kazakhstan (PONEN).

  Bat-Erdene Dash (MPIGM Mongolia)

Mr. Bat-Erdene Dash has 37 years of professional experience in the field of exploration geology, resource calculations. His main specializations are geological mapping at scale 1: 50000, geochemical and geophysical surveys, gold, copper, iron, fluorite deposits exploration; feasibility study of gold placer, iron, fluorite, uranium deposits. For the time of his career he discovered 3 gold, 1 iron, 3 coal deposits. Having held senior positions with two Ministries as well as having worked with major corporate players in the industry such as MAC, Ivanhoe Mines, SGS LLC, Monnis International LTD.

Mr. Bat-Erdene has a broad network of relations with foreign and domestic as well as state and private organizations. He has also participated in shaping the general concepts of mineral policy development in Mongolia, mineral resources legislation and taxation.

He received his geological MB degree in 1977 (USSR), Law degree LLM in 1997 (UK, Scotland) and PhD degree in 1999 (Mongolia) and Consultant Engineer in 2014 (Mongolia).

In October, 2014 Mr. Bat-Erdene has been elected as Chair of the Mongolian Mineral Resource Reporting Committee.

  Oyungerel (Gerlee) Bayanjargal BSc(Maths), BSc(Geo), MSc (Geo), MAusIMM(CP), PGeo Mongolia), MIAMG, MSME, MSEG, FMPIGM, (MPIGM Mongolia)

Gerlee has 21 years' experience in the Mongolian geology and mining environment and has also worked as a consultant with Snowden in Australia. She is the Executive Director of the Mongolian Professional Institute of Geosciences and Mining and Deputy Chair of the MPIGM. Gerlee is a Member of the Australian Institute Mining and Metallurgy and accredited as a Chartered Professional under the Discipline of Geology. She is also a Professional Engineer of Mongolia in discipline of Geology. Gerlee holds a Master of Science degree in Mineral Resource Exploration from The Netherlands and the Bachelor of Science degrees in Geology and Mathematics both from Mongolia.

Since joining Snowden, Gerlee has focused on projects primarily in Mongolia and assisting on projects in Africa and Australia with the main focus areas being orebody modelling, resource estimation, technical documentation and presents Snowden's professional development training courses. She has specialised on gold deposits both hard rock and placer and estimated several gold deposits resources and reserves in Mongolia. Most recently she was the Chief Mine Geologist at Boroo Gold Mine where she had worked since 2004 for Centerra Gold Inc, a Canadian company. Gerlee has been involved with project reviews, exploration and mining for hard rock and alluvial gold deposits in Mongolia, Kirgizstan and Kazakhstan.

  Grigoriy Malukhin (NAEN, Russia)

Grigoriy graduated with distinction from Moscow State Geological Prospecting University (MSGPU) as a Mining Engineer in 1996.  He has a Candidate of Technical Sciences (Geotechnology) from MSGPU (1999).  He began his career as a Research Assistant in 1993 and by 2000 became a Senior Research Engineer in the field of research and development of new technologies for improved recovery of valuable metals from ores and new technologies such as borehole mining. He spent four years working in the R&D Department of the Catalytica Energy Systems Company in USA carrying out analytical work.

Currently he is the Head of the Methodology and Development Department of the State Commission on Mineral Reserves (GKZ) and from 2004 he has also been a Head of the Science and Research Department of the Geocenter of Mineral Resources, a consulting body attached to the GKZ.  In these positions his work has included the development of guidelines and specifications for different kinds of normative/methodological and other kinds of regulatory and statutory documents aimed at improving the understanding and use of mineral reserves and resources, including the preparation of instructions for assessment and valuation of ore bodies to be used in the State Auditing process. Recently he became a member of the Central Commission on Development of Hard Mineral Reserves and Resources of Russia.

Grigoriy is involved in all communications and collaboration between the GKZ and professional bodies outside Russia, such as the UNECE (Ad Hoc Group of Experts on Harmonization of Fossil Energy and Mineral Resources Terminology), CRIRSCO, Society of Petroleum Engineers, European Federation of Geologists, consulting companies and others.

  Oleg Ilyin (NAEN, Russia)

Oleg graduated from the Moscow State Geological Prospecting University (MSGPU) in 1984. He was engaged in research in the field of stable isotope geochemistry. He has a Candidate of Sciences in Geology and Mineralogy from MSGPU (1988). Oleg worked for over 10 years in uranium exploration and mining in Kazakhstan, Uzbekistan and Eastern Siberia. From 2001 to 2004 he worked as a Chief Geologist in a coal mining company.

Since 2004 he has worked in one of the leading Russian companies – Mechel Company, where his last two positions are a Chief Geologist and a Director of Geological Exploration and Modeling Department. Oleg has extensive experience in assessing the Russian deposits in accordance to the SEC and JORC rules. He has experience in geological exploration of deposits of coal, iron, nickel, chromium. He is a part-time expert on coal deposits of the State Commission on Mineral Reserves (GKZ). He is a member of the Russian Society of Subsoil Use Experts (OERN). He took an active part in development of the NAEN Code.

  Roger Dixon (SAMREC, South Africa)

Roger is a graduate in Mining Engineering from the Royal School of Mines, London. He has over 38 years experience in deep level gold mine management, project development, mine valuation, engineering studies and safety and health. Based in South Africa he has worked for Anglo American, Anglovaal and Metorex. He is currently a corporate consultant and director with SRK Consulting.

Roger was both a founder member and chairperson of the Gold and Platinum committee in the Safety in Mines Research Advisory Committee (SIMRAC) system for eight years. He participated, on behalf of the Chamber of Mines, in the compilation of the Mine Health and Safety Act in 1996. He was a founder member and chairperson of the South African Mineral Resource Committee (SAMREC) and was instrumental in the development of the SAMREC Code which was first published in March 2000.

He is currently the Chairperson of the SAMREC/SAMVAL Committee (SSC) which is responsible for the SAMREC Code which was revised and re-published in 2007 and the South African Mineral Valuation Code (SAMVAL) which was first published in 2008.

He is a past president and Honourable Life Fellow of  the SAIMM and is a Professional Engineer (Pr Eng) registered with the Engineering Council of South Africa (ECSA).


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