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

A

Photo of Robert Adamson
Robert Adamson
GeologistGeologist

Bob Adamson commenced consulting in economic geology in 1993 following 25 years in technical and management positions with the CRA, Newmont, BP Minerals and Cluff groups.
He is experienced in the exploration and mining of base metal and gold deposits throughout Australia, New Zealand, southern and eastern Africa, northern Asia and northern Canada and has had significant involvement in the discovery and development of gold and base metal mines in several of these regions. He is also experienced in diamond and semi-precious stone exploration (especially eastern Australia).

Bob specialises in exploration appraisals and project management with emphasis on best-practice drilling and sampling procedures, the recording of data and the development of practical geological models of mineral deposits. He conducts geological audits of mineral resources and ore reserves for the appraisal and/or valuation of exploration and mining properties, with a focus on the geological aspects that impact mine profitability.
Clients include major mining companies, merchant banks and legal firms, and junior exploration companies in Australia and internationally. He presently provides part-time executive services to Klondike Source Limited, a gold exploration company listed on the Newcastle Stock Exchange.
His assignments extend to technical appraisals and valuations of exploration and mining properties in satisfaction of ASX and ASIC requirements, and as an expert witness in mining litigation.

Documents
Qualifications
  • BSc Canterbury 1963, MSc(Hons) Canterbury 1966
  • MMICA, MAusIMM(CP)
Specialities
  • Gold, Base Metal & Diamond Exploration & Management
  • Geological Audits of Resources and Reserves
    Mineral Property Valuations
Areas of Practice:
  • Exploration – Planning and Management
  • Exploration – Property Appraisal
  • Independent expert valuations
  • Literature surveys and data compilation
  • Resource / Reserve estimation (inc. geostatistics)
  • Technical audit and due diligence studies
Commodity Experience:
  • Base Metals
  • Diamonds
  • Gemstones
  • Gold, Silver
  • Nickel and Cobalt
Regional Experience:
  • Australia – All States
  • Canada
  • China
  • New Zealand
  • PNG
  • Russia, CIS

F

Photo of Dr Bradford Farrell
Dr Bradford Farrell
GeologistFarrell And AssociatesGeologist

Brad has more than 30 years broad based experience in mineral exploration and senior project management and evaluation. He commenced consulting in 1982 after working for a number of large companies particularly Anglo American in Australia, Africa and the pacific. Consulting work has led to involvement in a number of significant projects for a variety of commodities both in and outside Australia. These projects being mineral sands (Australia, Sierra Leone), sulphur (USA), diamonds (Australia, Sierra Leone), gold (Australia, New Zealand, USA) and manganese (Australia).

Director: Sun Resources NL

 

Qualifications
  • BSc Adelaide 1968, MSc Leicester 1972, PhD Leicester 1981
  • MMICA, FAusIMM (CP), MIMM (CEng), MAEG, MPESA
Specialities
  • Geology
  • Exploration
  • Geochemistry
Areas of Practice:
  • Exploration – Planning and Management
  • Exploration – Strategy
  • Exploration – Property Appraisal
  • Geochemistry
Commodity Experience:
  • Base Metals
  • Diamonds
  • Gold, Silver
  • Iron Ore, Manganese, Chrome
  • Nickel and Cobalt
  • Sn-W-Ta-Nb Group
  • Uranium
Regional Experience:
  • Australia – South Australia
  • Australia – Western Australia
  • Canada
  • Fiji
  • New Zealand
  • Pacific Islands
  • PNG
  • S E Asia (Malaysia, Thailand, Vietnam, Myanmar)
  • United States

G

Photo of Mr Stephen Gemell Expert Witness
Mr Stephen Gemell Expert Witness
Mining EngineerGemell Mining EngineersMining Engineer

Steve Gemell has more than 35 years’ experience in the mining industry, having worked throughout Australasia and in Africa, North and South America, Asia, Eastern and Western Europe. He has been Principal of Gemell Mining Engineers, an independent multi-discipline consultancy, since its formation in Kalgoorlie in 1984.
The consultancy specialises in mineral property assessment, valuations, technical audits, strategic studies, operational troubleshooting, hard rock mine planning and design, feasibility studies and expert witness.
His experience includes operational management in underground and open pit mining in positions from shift boss to resident manager, which has also involved the supervision of CIP/CIL, flotation and alluvial plants. He has subsequently held executive and non executive directorships, including the positions of CEO and Chairman, in listed mining companies. He has additionally held an appointment as Visiting Fellow at the University of New South Wales and is currently a member of the VALMIN Committee.
He is currently non-executive chairman of Golden Cross Resources Limited, and non-executive director of Argent Minerals Limited, Eastern Iron Limited, Indochine Mining Limited and UCL Resources Limited.
He is a fellow of the AusIMM, a Chartered Professional (Mining) and a Member of the American Institute of Mining, Metallurgical and Petroleum Engineers.

Qualifications
  • BE(Min)(Hons) Sydney 1976
  • Mine Mgr Cert (NSW, WA, South Africa)
    MMICA, FAusIMM (CP), MAIME
Specialities
  • Project Valuation & Technical Audits
  • Strategic Management
    Mine Planning & Design
Areas of Practice:
  • Independent expert valuations
  • Mine – Appraisal
  • Mine planning and design
  • Strategic planning including company acquisition
  • Technical audit and due diligence studies
Commodity Experience:
  • Base Metals
  • Diamonds
  • Gold, Silver
  • Industrial Minerals – Clay Minerals, Refractories, Abrasives
  • Iron Ore, Manganese, Chrome
  • Sn-W-Ta-Nb Group
Regional Experience:
  • Australia – Western Australia
  • Indonesia
  • Philippines

L

Photo of Mr Michael Lawrence Expert Witness
Mr Michael Lawrence Expert Witness
GeologistMINVAL Associates Pty LtdGeologist

Mike Lawrence

Mike is an economic geologist with some 48 years’ international Minerals Industry experience, who provides independent valuations of exploration and mine properties, project technical audits and dispute resolution solutions.  He specialises in due diligence and mineral property technical appraisals and valuations in an ADR or litigation context, involving a very wide range of commodities [eg, coal, iron ore, base metals, nickel, gold, bauxite, phosphate, aggregates, industrial minerals, dimension stone and gemstones.

He has been a mining and geological consultant to the metalliferous, coal and quarrying industries as CEO of international resource consultancies’ regional operations [eg, the French Government’s BRGM/SEREM and the UK Robertson Group], until 1991 when he founded Sydney-based Minval Associates.

He has been widely recognised by the Industry as an independent, highly ethical expert (MICA Medal, Honorary Fellow AusIMM & FAIG, 1999, President AusIMM and its Beryl Jacka Award recipient).

He authored 99 technical papers (to end 2013), particularly on aspects of valuation, due diligence, risk, ethics and professional liability.  He has made major contributions to AusIMM’s VALMIN Code since 1991 and development of AusIMM/MICA Alternate Dispute Resolution Scheme.  Appointed 2008 to NSW Ministerial Land Access Arbitration Panel (reappointed to June 2017).

Qualifications
  • BSc(Hons1) UNSW 1966,
  • GradDipPublicSectorMgt NSWIT 1985,
  • CertArb&Med 2000,
  • MAIMVA(CMV), MMICA, FAusIMM(CPGeo), FIMM(CEng), FAIG, MIAMA
Specialities
  • Technical Assessments, Audits and Valuations
  • Exploration Strategy, Planning & Management
    Alluvial & Hard Rock Geology
Areas of Practice:
  • Exploration – Planning and Management
  • Exploration – Property Appraisal
  • Government and public relations
  • Independent expert valuations
  • Resource / Reserve estimation (inc. geostatistics)
  • Technical audit and due diligence studies
Commodity Experience:
  • Bauxite and Alumina
  • Base Metals
  • Diamonds
  • Gemstones
  • Gold, Silver
  • Iron Ore, Manganese, Chrome
  • Nickel and Cobalt
  • Sn-W-Ta-Nb Group
Regional Experience:
  • Australia – Western Australia
  • Indonesia
  • New Zealand
  • Pacific Islands
  • Philippines
  • PNG
  • S E Asia (Malaysia, Thailand, Vietnam, Myanmar)

M

Photo of Mr Graeme Miller Expert Witness
Mr Graeme Miller Expert Witness
MetallurgistSinclair Knight Merz Pty LtdMetallurgist

With over 25 years’ experience in process plant operations, design and commissioning, Graeme has participated in the development of the minerals processing industry and the application of novel techniques to many problems. He is Process Manager for one of Australiaýs largest consulting engineering companies. He has a degree in Chemical Engineering and during the early part of his career was involved in the operation of plants for treating: gold, uranium, pyrite, sulphuric acid, diamond recovery, coal preparation and coal utilisation. His design capability covers all of these fields as well as being recognised as one of the leaders in the field of copper leaching solvent extraction and electrowinning. He is the leader of a team of process engineers who have made significant contribution to the advancement of various aspects of minerals processing and hydrometallurgy.
A fellow of the AusIMM with Chartered Practicing Status, member of SAIMM and of the Coal Preparation Society, Graeme has published over 40 technical papers in coal preparation and minerals processing. SKM provides services for the study, development, execution and commissioning of mineral processing plants and mining projects. Clients have included all major Australian mining companies and a wide cross section of the industry, in a variety of commodities.

Qualifications
  • BE(Chem) Queensland 1974 PREng (Chem) Queensland
  • MMICA, FAusIMM (CP), MSAIMM, MCoalPrepSoc
Specialities
  • Mineral Processing
  • Feasibility Studies
    Project Execution & Management
    Solvent Extraction
    Heap Leaching
Areas of Practice:
  • Coal washing
  • Flowsheet development and plant design
  • Heap Leach
Commodity Experience:
  • Bauxite and Alumina
  • Base Metals
  • Diamonds
  • Gold, Silver
  • Uranium
Regional Experience:
  • Australia – Queensland
  • Australia – Western Australia
  • Middle East (inc. Turkey, Cyprus)
  • S E Asia (Malaysia, Thailand, Vietnam, Myanmar)

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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