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Key Personel


Through decades of experience in the mining industry Addison Mining Services has established a network of highly capable and experienced mineral industry experts who operate as part of a dynamic team.


Our aim is to offer our clients a high value solution though use of the core consulting team who oversee, manage and deliver quality tailored solutions with the support of our extended network of associate consultants. 


We are always interested in hearing from experienced consultants who can add to our strengths and capability. 

James Hogg
James Hogg
Chief Executive Officer | Principal Geologist


James Hogg (MSc, BSc, MAIG) is a Principal Geologist and Managing Director of Addison Mining Services with over 20 years experience in the mineral exploration and resource industry. James previously worked for Micromine Consulting Services for eight years, based in London, United Kingdom.


James has worked as an exploration and resource geologist for precious and base metals in the Yilgarn Craton of Western Australia, East and West Europe, Africa and the America’s. James has recently focused on primarily precious and base metal resource estimation projects, undertaking project management, data management, project auditing, due diligence, resource estimations and reporting to JORC and NI 43-101 standards.


James acts as Qualified Person for a variety of vein/shear hosted, porphyry related, VMS and stratigraphic polymetallic deposit types.

Lewis Harvey
Lewis Harvey
Director Exploration Services | Senior Geologist


Lewis Harvey (MSc, BSc (Hons)) is an exploration geologist with over 15 years mineral exploration and mining industry experience. Lewis has worked as an exploration geologist for precious and base metals in Australia, Brazil, Colombia, El Salvador, Nicaragua, USA and Zambia.


Lewis joined Addison in April 2015 and conducts mineral exploration work as well as advising on best practice operating procedures, exploration program design and technical reporting to JORC2012/CIM standards.


He is experienced in Gold, Silver, Coal, Copper, Lead, Zinc, Iron Ore, Tin, Molybdenum, Nickel and Uranium.

Richard Siddle
Chief Operating Officer | Principal Geologist


Richard Siddle (MSc, MGeol (Hons), MAIG, FGS, MCSM) is a resource geologist with over 15 years experience in the minerals exploration and mining industry. 


Richard's experience started in 2007 in Queensland Australia where he undertook exploration and resource estimation drilling for Uranium. After completing an MSc at Camborne School of Mines he undertook a variety of field based roles with RSC Mining and Mineral Exploration before working for Micromine Consulting Services as a resource geologist in 2012.


Richard joined Addison in November 2014 and conducts geological modelling, resource estimation, reporting to CIM/JORC 2012 standards, prepares technical diagrams and advises on best practice operating procedures and exploration program design.


He is experienced in Gold, Silver, Lead, Zinc, Copper, Tin, Iron Ore, Uranium, Oil Shale and Potash.

Paula Mierzwa
Senior Geological Data Consultant


Paula Mierzwa (MSc, BSc) is a specialist in geological data management and data quality control. She holds a BSc in Underground and Open Pit Mining and an MSc in Exploration and Mining Geology from the University of Science and Technology in Wroclaw.


She worked for Datamine Software in the UK for 4 years before moving to Altus Strategies where she implemented and managed a geological database and management system and monitored Quality Control across all company projects.

Paula also has experience in geological modelling and block modelling and has been exposed to production geology environments through multiple summer internships during university. She is an active volunteer with the Women in Mining committee in the UK.

Rhys Davies
Julian Bennett
Associate | Principal Mining Engineer


Julian Bennett is a widely-experienced mining professional with over 50 years in the industry.  His career has covered: mining engineering, mine design and planning, mine operations management, mine construction, and mining consultancy.

Julian has worked in bauxite, copper, cobalt, gold, chrome, iron ore, nickel, lead, tin, tungsten, zinc and uranium.  He has experience of open pit and underground mining.  During his career, he has worked in Europe, Africa, The Americas, Central Asia and Australia.  His recent experience includes reports for IPOs, other listing documents, investor due diligence and project appraisals.

Julian is a Chartered Engineer, and gained a Bachelor of Science (Engineering) (Hons) in Mining from the Royal School of Mines, Imperial College, London (1964).  He is a Fellow of the Institute of Materials, Minerals and Mining (UK) and holds an Associateship of the Royal School of Mines.


John Forkes
Dr John Forkes
Associate | Principal Consultant
- Geostatistics


Dr John Forkes (PhD, MSc, BSc, FIMMM, CEng) has over 35 years experience in mineral resource evaluation. He is a specialist in the Application of Advanced Geostatistical methods for recoverable resource/reserve estimation as well as having extensive experience in the use of Conditional Simulation for Resource Classification, and assessment of confidence, Resource Risk Analysis and optimisation of drillhole planning.


He is highly experienced in undertaking reviews/audits of resource models for clients with respect to potential mergers, Acquisitions (M&A) and Technical Assurance purposes.


John has experience in a broad range of commodities, but specialises in uranium, iron ore and beach sands. 


John also has considerable experience in teaching and training in resource estimation, having taught at a number of universities in the UK and North America and significant experience in the design and implementation of training and mentoring programs for resource estimation.


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