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A B C D E F G H I K L M N O P R S T V W Y

D

Photo of Mr John Dunlop Expert Witness
Mr John Dunlop Expert Witness
Mining EngineerJohn S Dunlop & AssociatesMining Engineer

John is a mining engineer, whose first 20 years of professional experience was obtained as a mining company employee, rising through the ranks from machine miner to the level of General Manager Operations.

His experience spans both surface and underground mining applications in the hard rock, metalliferous field, where he holds current Mine Management Certificates of Competency (1st Class).

He has consulted on a full time basis since the early 1990’s in most fields of mining engineering, but principally project feasibility, operations management, mine design and valuation, technical audits, merger and acquisitions, corporate advice and expert witness work.

Assignments worldwide have included temperate, arctic, high altitude and tropical locations, whether high rainfall or arid.

John matriculated with honours in French and Russian, but also has some Bahasa, Melanesian Pidgin, Arabic and Spanish.

He is a Board Member of MICA and a former director of the AusIMM.

Documents
Qualifications
  • BE(Min)(Hons) Melbourne 1971
  • MEngSc Melbourne 1979
  • P CertArb Adelaide 2001.
  • MMICA, FAusIMM (CP), FIMM, MCIM, MSME
Specialities
  • Mining Engineering
  • Project Feasibility & Technical Audits
  • Extensive International Experience
Areas of Practice:
  • Independent expert valuations
  • Mine planning and design
  • Strategic planning including company acquisition
  • Technical audit and due diligence studies
  • Tenders and contracts
Commodity Experience:
  • Base Metals
  • Gold, Silver
  • Iron Ore, Manganese, Chrome
  • Nickel and Cobalt
Regional Experience:
  • Australia – Western Australia
  • Central Asia
  • Eastern Europe
  • India
  • Indonesia
  • New Zealand
  • Pacific Islands
  • Philippines
  • PNG
  • Russia, CIS
  • S E Asia (Malaysia, Thailand, Vietnam, Myanmar)
  • South America – other

E

Photo of Mr Rodney Elvish Expert Witness
Mr Rodney Elvish Expert Witness
MetallurgistB E EnterprisesMetallurgist

Rod is a Consultant Metallurgist and Company Director who has extensive operating and consulting experience in metallurgy and mineral processing. He is Chair of the Mineral Processing Commission of the International Mineral Processing Council (IMPC).

He undertakes a wide variety of technical and commercial assignments, often combining his broad production, management, director, evaluation and development experience to achieve project specific solutions. He takes a holistic approach, matching the metallurgy to site, geological, mining and corporate factors. A similar approach is taken to evaluating new technologies.

Areas of specialisation include:

  • project management
  •  complex polymetallic metallurgy including differential flotation
  • gold, other precious and base metals recovery
  • iron ore beneficiation
  • new process evaluation
  • gravity separation
  • liquid/solid separation

Rod consults to operations staff, company boards, financiers and lawyers. He manages feasibility studies, undertakes valuations, independent reports and advises on mergers and acquisitions.

Assignments undertaken include:

  • metallurgical evaluation of exploration projects
  • managing feasibility studies
  • Assessor, Supreme Court of Queensland
  • on site plant trouble-shooting and optimisation
  • evaluation of new processes and technologies
  • independent technical reports and expert witness assignments
  • financiers’ completion tests and technical audits
  • testwork design, supervision and interpretation of results
  • flowsheet development, costing and equipment selection

Major project works include the development of major iron ore and manganese projects in West Africa, advanced tungsten processing, project management of the Browns polymetallic project (NT), the assessment and development of resin based gold and cyanide recovery technologies and new processes for recovering gold from refractory gold ores. As Director and later Chairman of Allstate Explorations NL he was extensively involved in bringing the Beaconsfield Gold Mine in Tasmania back into operation.

Rod is a past President of the Australasian Institute of Mining and Metallurgy and a Councillor of the IMPC.

Qualifications:
  • FRMIT(PrimaryMet) 1970, DipGeoSc(MinEc) Macquarie 1984, Prof Cert in Arb Adelaide 2003
  • MMICA, Hon FAusIMM (CP), FIMM, FAICD
Specialities:
  • Mineral Processing & Metallurgy
  • New Technology Evaluation and Auditing
  • Due Diligence Studies
Areas of Practice:
  • Independent expert valuations
  • Metallurgy and mineral processing
  • New technology, research and development
  • Project – Management
  • Strategic planning including company acquisition
  • Tailings and waste management
  • Technical audit and due diligence studies
Commodity Experience:
  • Bauxite and Alumina
  • Base Metals
  • Gold, Silver
  • Iron Ore, Manganese, Chrome
  • Nickel and Cobalt
  • Sn-W-Ta-Nb Group
  • Uranium
Regional Experience:
  • Australia – Northern Territory
  • Brazil
  • PNG

P

Photo of Mr Geoffrey Pitkin
Mr Geoffrey Pitkin
Mining EngineerPitkin Mining Consultants Pty LtdMining Engineer

Fields of special competence: Long and short term planning of open cut coal mines. Development and application of computerised planning techniques for mine design, scheduling and equipment simulations. Management and coordination of team studies requiring a wide range of technical expertise. Mineral economics and its application to exploration, feasibility studies and mine planning. The application of a broad range of mining technologies including both continuous and discontinuous methods and equipment.
With more than 20 years experience in the New South Wales and Queensland coal industries Geoff has a background in both open cut and underground operations, new mine development and the preparation of feasibility studies. In working for BHP, TDM (Nebo and Riverside), MIM (Newlands), Warkworth and Sinclair Knight, he has developed particular skills in the areas of dragline operations, the application of mining technologies, mineral economics, software development and project management.
Since becoming a consultant in 1990 Geoff has managed and performed: major feasibility and prefeasibility studies; technical reviews; financial studies and valuations; equipment comparisons and justifications; rehabilitation studies; and short and long term planning.

Documents
Qualifications
  • BE(Hons) NSW 1978
  • MMICA, MAusIMM (CP)
Specialities
  • Mine Design and Planning
  • Feasibility Studies
  • Economics and Valuations
Areas of Practice:
  • Independent expert valuations
  • Mine – Appraisal
  • Mine planning and design
  • Project – Management
  • Scheduling
  • Strategic planning including company acquisition
  • Technical audit and due diligence studies
Regional Experience:
  • Australia – Queensland

T

Photo of Dr David Tyrwhitt
Dr David Tyrwhitt
GeologistDS Tyrwhitt & AssociatesGeologist
 An economic geologist with over forty years of exploration and mine management experience, David was director of exploration and later CEO with Newmont (1981-1988) then CEO with Ashton Mining for three years (1988-1991) until setting up in practice as a consulting geologist.

Exploration and mining of gold and diamonds, base metal exploration background in Australia, SW Pacific, SE Asia, China, India, Indonesia, North America, Eastern and Southern Africa.
Directorships: Astro Mining NL, Bay Resources Limited, Quantum Resources Limited. Johnsons Well Mining NL, Gutnick Resources N.L. Major consulting role with several Gutnick network companies and Normandy Anglo Asia Joint Venture 1992-96.
Last three years’ focus has been on gold and base metal projects in China with consulting role with Sons of Gualia (Tantalum), Ivanhoe Mines Limited (gold, copper, nickel and PGM), Anglo American (base metals) Anglo Platinum (PGM).

Qualifications
  • BSc(Hons) Bristol 1959, PhD Leeds 1966
  • MMICA, FAusIMM(CP), FSEG(USA)
Specialities
  • Gold Exploration In Australasia
  • IndoChina, China & Indonesia
    Gold Project & Mine Resource Audit
Areas of Practice:
  • Exploration – Planning and Management
  • Exploration – Strategy
  • Exploration – Property Appraisal
  • Management services
  • Strategic planning including company acquisition
Commodity Experience:
  • Base Metals
  • Diamonds
  • Gold, Silver
  • Nickel and Cobalt
Regional Experience:
  • Canada
  • China
  • East Africa
  • Fiji
  • India
  • Indonesia
  • New Zealand
  • Pacific Islands
  • Philippines
  • PNG
  • S E Asia (Malaysia, Thailand, Vietnam, Myanmar)
  • United States

 

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