The Team

The Team

  • Alison Saxby B Eng (Hons) MIMMM

    Alison Saxby B Eng (Hons) MIMMM

    Managing Director

    Alison was appointed as Managing Director in October 2020. A longstanding member of the main board of directors, and previously Head of Roskill Information Services, Alison oversaw a period of significant expansion and development in the publishing business.

    Concurrently she was Head of Industrial Minerals research and is a leading voice in the Industrial Minerals industry and beyond. Alison’s experience in research, consultancy, publishing and business development mean that she has a breadth of wisdom and knowledge that she brings to the role of Managing Director, as well as continuing to carry out key consultancy assignments.

    Alison has 30 years’ experience of researching industrial mineral markets and supply developments. She worked on the leading trade publication, Industrial Minerals, and launched its sister commodity pricing news service. Alison worked in business development for large mineral trading and processing company, as well as operating as an independent consultant for ten years. She has edited and written reports, features and articles on many aspects of the industry  She is a regular speaker at international conferences on various aspects of the minerals and metals industries.

    Alison graduated from Leeds University in Mineral Engineering (B.Eng (Hons)) and is a Professional Member of the IMMM

  • Dr Jack Bedder BA (Hons) MA PhD FRGS MIMMM

    Dr Jack Bedder BA (Hons) MA PhD FRGS MIMMM

    Director - Research and Business Development

    Jack joined Roskill in 2012 and is now a Director, responsible for the production of all of Roskill’s multi-client reports and subscription products.  He also manages Roskill’s international sales and marketing teams.

    He has over 10 years’ experience of analysing the economics of natural resources and managing, developing and building client relationships in the commodities research and consultancy sector.

    Jack has worked on a wide range of research reports and consulting assignments at Roskill, focused mainly on steel alloys and battery raw materials sectors.  He is an authoritative voice on the global antimony, cobalt, niobium and vanadium markets and is a regular speaker at international conferences on the subject of emerging technologies and their impact on raw material supply chains.

    Jack graduated from University College London in 2008 with an MA in Political Science and has a PhD from the University of Cambridge where his research explored the processes and behaviours that shape critical materials supply chains.

  • Neal Brewster

    Neal Brewster

    Chief Economist

    Neal joined Roskill in 2019 to lead strategic consulting projects for Roskill’s consulting practice. He previously ran his own independent consulting company, focused on providing strategic and investment advice to operators and investors across the natural resources sector and has extensive experience of macroeconomic and microeconomic analysis and a wide range of metals, minerals and energy markets as well as leading the development and application of advanced financial modelling techniques.

    He worked at Rio Tinto from 1998-2015 where he held senior roles leading commodity market and valuation analysis and provided investment guidance on projects, acquisitions and divestments across numerous commodities and jurisdictions as well as the development of corporate strategy.

    Neal has a BSc and MA in Economics.

  • Jessica Roberts MGeol

    Jessica Roberts MGeol

    Manager - Copper & Technology Materials

    Jessica leads Roskill’s tungsten and titanium metal research and, as Manager of Roskill’s Copper & Technology Materials division, is responsible for Roskill’s copper, tantalum and magnesium research, among others. Jessica has 10 years’ experience in industrial minerals and minor metals research. Before joining Roskill in 2012 Jessica spent four years at the leading trade publication Fastmarkets IM (formerly Industrial Minerals), She is a regular speaker at international conferences on titanium, tungsten and refractories markets.

    Jessica graduated from the University of Leicester in 2008 with a Master’s degree in Geology.

  • Kerry Satterthwaite BSc PG Dip MIMMM MRSC

    Kerry Satterthwaite BSc PG Dip MIMMM MRSC

    Manager - Industrial Minerals & Chemicals

    Kerry specialises in lithium-ion battery grade graphite, fluorspar and salt and created Roskill Salt conferences with her Division team. She has over 30 years’ experience in metals and minerals research.

    Kerry has written, researched and published over 30 Roskill reports. She is a professional member of IOM3 (the Institute of Materials, Minerals and Mining) and sits on the board of The Polymer Society, a division of the Institute. Kerry is a recognised authority in the global downstream petrochemicals industries and frequent speaker at conferences around the world in addition to developing and chairing industrial conferences.

    Kerry obtained her B.Sc. Honours in Chemistry at King’s College, London University and her postgraduate degree in Pollution Chemistry at Liverpool University. She is a member of the Royal Society of Chemistry.

  • David Merriman BSc MSc FGS

    David Merriman BSc MSc FGS

    Manager – Battery & Electric Vehicle Materials division

    David joined Roskill in 2011, initially working on the rare earth elements market outlook report.  In addition to co-authoring the rare earths report, David has contributed to Roskill’s lithium, tungsten and molybdenum market reports and provided analysis for a range of bespoke consultancy projects.  David has managed Roskill’s Battery & Electric Vehicle Materials division since 2018, which encompasses Roskill’s analysis on the lithium, lithium-ion battery, cobalt, rare earths and electric vehicle markets.  He has also presented at various conferences in Europe, Asia and North America on the rare earth elements and lithium markets.

    Prior to joining Roskill, David worked as an exploration geologist on precious metal and rare earth element projects in South America and Africa.  

    David graduated from the University of Birmingham with a BSc in Geology before completing an MSc in Mining Geology at Camborne School of Mines (University of Exeter). 

  • Dr Nils Backeberg CSci MIMMM

    Dr Nils Backeberg CSci MIMMM

    Manager - Steel Alloys

    Nils joined Roskill in 2017 and now manages the Steel Alloys Division. His main research is focussed on antimony, chromium and rare earth supply chains and markets. Nils gained his Chartered Scientist accreditation in 2019, which reflects his research experience and contribution to scientific knowledge through ongoing peer-reviewed publications, teaching academic courses and regular conference presentations.

    Nils completed his PhD at McGill University in 2015 on the structural geology of gold deposits and worked as a postdoc at the University College London on shale gas exploitation and rock deformation. He comes from South Africa where he completed his BSc (Honours) and MSc at the University of Cape Town. Nils has worked as an exploration geologist on a rare earth deposit in South Africa and consulted on geothermal projects in Guatemala.


  • Oliver Heathman BSc MSc

    Oliver Heathman BSc MSc

    Manager - Sustainability & Cost Analysis

    Oliver manages Roskill’s Sustainability & Cost division. He has more than ten years’ experience within the metals and mining market. Oliver was a founding member of Metals Focus, where he also headed up the company’s mining, cost and producer hedging research. He is a regular speaker at international conferences and events.

    He holds a BSc in Geology from the University of Bristol and a first-class MSc in Mining Geology from Camborne School of Mines (University of Exeter).

  • Xiaobai Liu BSc MA

    Xiaobai Liu BSc MA

    Manager - Roskill China

    Xiaobai joined Roskill in 2018 and focuses on analysis of lithium battery metals and business development in Chinese market.

    Prior to joining Roskill, Xiaobai worked as Senior Consultant at CRU Consulting Beijing office. She worked on a wide variety of projects across different commodities, including copper, aluminium, cobalt, nickel and lithium. Xiaobai manage tailored strategic projects related to Chinese and global market, supported Chinese producers in lenders’ investment through valuation of assets with focus on due diligence for mining/refining projects and provided market-entry feasibility study for downstream producers.

    Xiaobai graduated a MA in International Relations from New York University, USA. She also holds a MA in International Political Economy from Peking University and a BA in English from University of Science and Technology Beijing.

  • Patrick Stratton BA (Hons) DESEM DipM

    Patrick Stratton BA (Hons) DESEM DipM

    Principal Consultant

    Patrick has 30 years’ experience in analysing a wide range of industrial minerals and metals markets and has undertaken research fieldwork in nearly 30 countries. He graduated in 1986 with a BA in European Business Administration and a Diplôme d’Études Supérieures Européennes de Management (Middlesex Business School, London, and École Supérieure de Commerce, Reims, France). He began his career with Roskill in 1986 before moving to a large engineering consultancy, where he specialised in steel industry research, and then to the Canadian Embassy in London, where he worked as a trade and investment officer. He returned to Roskill in 2002. Patrick is a recognised authority in the global tantalum and niobium industries and has been the author of several editions of the Roskill reports on both commodities, in addition to being the lead on many consulting projects. He is based in Québec, Canada, which facilitates research and client contact in North America.

  • Erik Sardain

    Erik Sardain

    Principal Consultant

    Erik joined Roskill in 2018 and works on its steel alloys market reports and consulting assignments. Erik focusses on the market for hardened, structural and bearing low alloy steels.

    Erik has more than twenty years’ experience in the mining industry, as an investment analyst, portfolio manager, and independent consultant, covering base and bulk commodities as well as energy and chemicals, based in Asia, Europe and North America. He previously worked for BHP Billiton, based out of Singapore, covering ferrous metals and heading the global iron ore research. 

    Erik graduated from University of Geneva and the Graduate Institute of International Studies with Licence degrees in Economics and Political Sciences.

  • Suzanne Shaw MSci

    Suzanne Shaw MSci

    Deputy Manager - Industrial Minerals & Chemicals

    Suzanne has been working with Roskill since 2007 and became Deputy Manager of the Industrial Minerals & Chemicals Division in 2018. She specialises in analysis of natural and synthetic graphite and tantalum and has previously worked as part of the rare earths team. Suzanne is the author of numerous Roskill reports on these industries, has developed and maintains related supply/demand models, and is a key part of the consultancy team.

    Suzanne has spoken at recent industry conferences worldwide on trends in the EV/HEV industry, raw material competition in lithium-ion battery anodes, the future of Chinese and rest-of-world graphite supply, graphite electrode market trends and tantalum supply chain sustainability. 

    Suzanne graduated with an MSci in Geoscience from Royal Holloway, University of London in 2006.

  • Jonathan Barnes

    Jonathan Barnes

    Principal Consultant

    Jonathan is Roskill’s Principal Copper Consultant.

    A dedicated industry expert with over 25 years’ worth of experience of research and analysis in the copper market through CRU, Wood Mackenzie and as an independent analyst Jonathan has built up a detailed knowledge and established contacts in the wire rod, brass mills, scrap, and wire & cable businesses. Throughout his career he has been motivated to research and publish accurate business reports, with rigorous attention to detail. These are based on fieldwork and statistical data analysis, interpretation and original thought to explain complex issues in an easily understandable format to provide conclusions and recommendations for senior industry executives. He has a genuine passion for investigating the copper industry and understanding the importance of the many forces that are driving the business and shaping its future.

    Jonathan has travelled widely through China, ASEAN, India and the Middle East to visit the industry to understand and learn about growth prospects in these rapidly industrialising, yet poorly documented fast developing markets for copper.

  • David McNeill BSc

    David McNeill BSc

    Senior Analyst

    David has been analysing metal and industrial mineral markets for over two decades since joining Roskill in 1994. He has written many of the company’s multi-client reports but in more recent years has specialised in those dealing with industrial minerals. In particular, he has concentrated on those minerals used in the paper (calcium carbonate and kaolin), refractory (magnesia and zircon), chemical (iodine and soda ash) and glass (boron) industries. David has also contributed to a wide range of consultancy projects, including due diligence reports on magnesia and talc, and market studies on various aspects of the boron, talc and calcium carbonate markets.

  • Olivier Masson

    Olivier Masson

    Senior Analyst

    Olivier joined Roskill in 2017 and focusses on the analysis of stainless steel and ferroalloys. Prior to joining Roskill, Olivier managed the European strategic research team for a major financial information provider’s corporate services group. He subsequently joined commodities analysis and consultancy group CRU in 2008 where he covered various markets such as aluminium, copper and stainless steel and spoke regularly at conferences.

    Olivier graduated from London’s City University Business School in 1995 with a BSc in Banking and International Finance.

  • Egor Prokhodtsev

    Egor Prokhodtsev

    Senior Analyst

    Egor Prokhodtsev is responsible for Roskill’s automotive practice. Egor performs research and analysis on the electric vehicle, battery and downstream supply chain markets.

    Egor Joined Roskill in 2020 having previously worked in market research function for ERG with particular focus on cobalt demand and battery technology developments. Prior to ERG Egor worked as business and data analyst for a major machinery corporation in Russia and Moscow Healthcare department.

    Egor has an Engineering degree from Bauman Moscow State Technical University in the field of aerospace technologies. He is fluent in Russian and English.

  • Leslie Liang

    Leslie Liang

    Senior Analyst

    Leslie joined Roskill in 2019 as a senior analyst, after having worked as a collaborator with Roskill since 2017, and contributes to antimony, rare earth and tungsten market reports and consulting. She leads strategic metal industry and Chinese raw material policy analysis, is a regular speaker at Chinese and international conferences, and has built a broad industry network across the upstream and downstream metal industry. Prior to joining Roskill, she worked as a global base metal and mining analyst for CHR for over 12 years with a focus on developments in China, during which time she developed ongoing relationships with companies involved in the mining industry.

    Leslie graduated from the Hunan University, China in 2005 with a Bachelor’s degree in Finance.

  • Jack Anderson

    Jack Anderson

    Senior Analyst

    Jack joined Roskill in 2014, initially covering the markets for nickel, tantalum, niobium and bauxite & alumina. In addition to presenting at conferences, he co-authors consultancy studies on nickel, vanadium, salt, iodine chemicals and sodium sulphate markets as well as providing consulting services and report writing on nickel market supply.

    Jack graduated from Royal Holloway, University of London, with an MSci degree in Geoscience.

  • Brian Ziswa

    Brian Ziswa

    Senior Analyst

    Brian joined Roskill in January 2020 as a senior Sustainability & Costs Analyst. He is responsible for developing and updating cost models and mining research analysis with an initial focus on cobalt and other EV Raw Materials.

    Brian graduated with an MSc in Mining Geostatistics from Ecole Nationale supérieure des mines de Paris where he completed his thesis on the evaluation of a Pb-Zn deposit in Congo (Brazaville). He also holds a BSc (Hons) in Geology from the University of Zimbabwe.

    Brian has broad experience in the commodities sector having worked as an exploration geologist,  Geostatistician and research analyst. Experience includes stints with Delta Gold, AfriOre, Brook Hunt/Wood Mackenzie.

  • Ying Lu, MSc

    Ying Lu, MSc

    Senior Analyst

    Ying joined Roskill in 2018 and focusses on cobalt and nickel sulphate research. Ying Lu graduated from Cass Business School, London, with a MSc in Energy, Trade and Finance. In her distinction-awarded thesis, Ying explored cobalt supply risk and its impacts on the EV battery industry.

    Before her MSc, Ying worked for a leading cobalt and nickel trader and processor based in eastern China, where she was responsible for supply chain, procurement and business strategy. Her commercial exposure to cobalt and nickel raw materials has translated into industry knowledge as well as business acumen to identify trends in these markets.

  • Irmtraud Berger

    Irmtraud Berger

    Senior Data Manager

    Irmtraud joined in 2017 and is responsible for managing and producing the Stainless Steel & Alloys Weekly. She also produces the underlying demand data for stainless steel and scrap forecasts. Irmtraud is responsible for much of the data collection from producers, consumers and other sources of industry information for Roskill’s Steel Alloy products and collaborates in the production of nickel reports and cost models, as well as pricing and trade data updates.

    Prior to joining Roskill, Irmtraud was a market researcher at Heinz H. Pariser Alloy Metals & Steel Market Research since 1986, where she worked on stainless steel, nickel and scrap market studies. She has also been involved in a number of global research and consulting projects.

  • Michaela Lamers

    Michaela Lamers

    Senior Data Analyst

    Michaela works closely with Irmi focusing on market research and data analysis, including on stainless steel and nickel-base alloys. She has worked in these fields since 1991 and has tracked the evolution of trends in these markets for more than two decades. She has played a key role in the collection of data for numerous consulting projects covering a wide variety of topics.

  • Jake Fraser BSc (Hons)

    Jake Fraser BSc (Hons)

    Senior Consultant

    Jake Fraser is a senior consultant specialising in battery materials at Roskill. Jake performs research and analysis across the suite of cathode raw materials and is responsible for Roskill’s lithium supply outlook. He undertakes bespoke consultancy projects for companies requiring strategic advisory at all stages of the supply chain. Jake is a regular speaker at international industry conferences and events, presenting at events in Asia, Europe and the Americas.

    Before joining Roskill’s consulting division in 2018, Jake was a resource economist within business development at Gindalbie Metals. During this time Jake undertook a major corporate strategy review evaluating strategic cobalt, lithium, copper and gold markets and aligning them with risk assessed M&A opportunities. This led to the acquisition of the Mt Gunson Copper-Cobalt Project in South Australia by way of farm-in agreement.

    Jake holds an Honours Degree in Economics from Murdoch University in Perth, Western Australia where he studied technological progress as a driver of economic growth.

  • Eileen Wu, MSc

    Eileen Wu, MSc


    Eileen Joined Roskill’s China office in 2019 and focusses on the markets for lithium-ion batteries and battery materials. She contributes to major China-focused analysis and consulting.

    Prior to joining Roskill, Eileen worked Sunwoda Electronic Co., Ltd located in Shenzhen a known and listed Li-ion battery producer of China, where she was responsible for Sunwoda’s supply chain management and market analysis with a focus on cobalt, lithium, nickel and cathode materials.

    Eileen graduated from Shenzhen University with an MSc in inorganic functional material. She has an academic background in Li-ion battery and participated in several research projects on cathode materials used in All Solid Film Li-ion battery when she was in Shenzhen university.

  • Dominic Wells Bsc, Msc

    Dominic Wells Bsc, Msc


    Dominic joined Roskill in April 2019. He is a Sustainability & Cost Analyst specialising in battery raw materials. Dominic is responsible for developing sustainability and cost model analysis on current and future mining and refining operations and is one of the principal authors of Roskill’s Sustainability Monitors. Dominic also collaborates in producing overall market reports, co-authoring across a variety of commodities and forecasting market developments. 

    Dominic graduated with a Distinction MSc in Advanced Mineral Resources Development from TU Bergakademie Freiberg, MU Leoben and China University of Mining and Technology, where he completed his thesis in proposed remediation operations of brownfield former mining sites. Prior to this he completed his BSc in Geology at the University of Brighton where he also specialised in remediation of former mine sites. 

  • Ramsey Yavuz

    Ramsey Yavuz


    Ramsey joined Roskill in 2019 primarily focusing on Manganese, Chromium and Steel Alloy research. He is responsible for Roskill’s Manganese annual and quarterly outlook reports as well as contributing to in-house research and consulting analysis across steel alloys and its raw materials.

    Prior to joining Roskill, Ramsey worked as a Management Consultant within the Strategy and Operations service line at Deloitte Georgia with project experience across Agricultural, Public, Postal and Oil&Gas Sectors. This includes experience of feasibility study assessments, market overviews and cost reduction engagements. In addition, he worked as a Mining Manager at TurkMangan in Ankara, Turkey. During this time, Ramsey provided oversight on operational plan to ensure smooth end to end running of manganese production line and cost benchmarking analysis for competitive positioning on international markets.

    Ramsey graduated from Cass Business School with a MSc in International Accounting and Finance and a BSc in Business

  • Adam Slade

    Adam Slade


    Adam joined Roskill in 2020 as an analyst and focuses on tungsten and tin research. He is involved in the writing of comprehensive annual and quarterly market reports, contributing to in-house research, collaborating on consulting projects and speaking at conferences.

    Adam graduated from Camborne School of Mines (University of Exeter) in 2019 with an MSc in Mining Geology, where he completed his thesis on the modelling of alternative geostatistical techniques for resource estimation. Before his MSc, Adam worked as a Geotechnical Engineer on major construction projects across London.

  • Tong Tong, MSc

    Tong Tong, MSc


    Tong joined Roskill in March 2020 as a Steel Alloys Analyst and focuses on chromium, manganese and ferroalloy research. He is involved in writing Roskill’s annual and quarterly outlook ferroalloy reports, contributing to China-focused consulting and research projects. .

    Tong has broad market research and quantitative analysis experience. Prior to joining Roskill, he worked as a Business Intelligence Manager at HP, where he focused on strategic planning and data analysis. Prior to this he worked as a Deals Desk Analyst at Trafigura, where he was responsible for PnL reporting of alumina and refined metal copper and conducting quantitative analysis for physical and futures positions. He also worked as a Senior Analyst in Quantitative team at Nielsen in Beijing. Tong graduated with a Distinction MSc in Marketing from Queen Mary University of London in 2016 and holds a Bachelor’s degree of Economics from Northwest Normal University

  • Dr Kevin Gunan Shang

    Dr Kevin Gunan Shang


    Kevin joined Roskill in 2020 as an analyst in Roskill’s London office, focussing on the Li-ion battery industry and raw materials for electric vehicles. He is responsible for in-house research on cathode precursors and materials, providing key information for Roskill’s Li-ion battery report and related consultancy across the Battery and Electric Vehicle Materials division.   

    Prior to joining Roskill, Kevin worked at the BBC and Reuters TV, reporting on China-related matters and metal commodities for the broadcaster’s international audience in both Chinese and English. Kevin completed his PhD at University of Manchester, UK in 2017 on the corrosion and protection of automotive materials.  Before his PhD studies, Kevin obtained a BSc in Materials Science and Engineering from Northwestern Polytechnical University in China. 

  • Yiwei Yin, HBSc, MSc

    Yiwei Yin, HBSc, MSc


    Yiwei joined Roskill in 2020 as a Sustainability & Cost Analyst. His work principally focuses on developing the company’s sustainability and cost research across a variety of China-centric commodities.

    Before joining Roskill, Yiwei worked as a Project Manager for LingYi technology Co., Ltd (Apple global manufacture supply chain). He graduated from the University of Toronto with HBSc in Geology and MSc in Experimental Geochemistry. During his post-graduate studies, he was working on high pressure and high-temperature experimental simulation and mathematical modelling of metal solubilities in magmatic hydrothermal fluids to better understand ore genesis. Yiwei has published research in well-known scientific journals and presented at several international conferences.

  • Ross Embleton

    Ross Embleton


    Ross joined Roskill in 2020 as an analyst for the titanium and rare earth markets. He is involved in the writing of comprehensive market reports, contributing to in-house research, collaborating on consulting projects and speaking at conferences. Prior to joining Roskill, Ross worked as a Graduate Mine Geologist in Western Australia, where he was responsible for daily ore tracking, specific gravity sample analysis and digblock mapping.

    He holds a first-class BSc in Geology from the University of Brighton and a MSc with distinction in Mining Geology from Camborne School of Mines (University of Exeter). His thesis involved applying financial analysis and parameter ranking systems to energy metal mining projects from around the world to investigate their investment potential.

  • Thomas Drummond BSc (Hons)

    Thomas Drummond BSc (Hons)

    Business Systems Manager

    Thomas works alongside the rest of the Roskill team to keep day-to-day operations at their peak. He manages our global IT hardware and software, as well as office networks and telephony. An integral part of the London HQ since 2009, Thomas also oversees our online sales and marketing platforms and ensures smooth running of the client-facing web publication system, Roskill Interactive. Within the Roskill Events team, Thomas is continually developing and updating systems to provide a professional experience for delegates, rolled out across our increasing number of international conferences. Thomas helps to manage Roskill’s website in conjunction with the marketing team. He also manages several internal databases to keep analysts and consultants up to date with current information and trends.

  • George Coles BSc

    George Coles BSc

    Business Development Manager – Europe, Russia & Scandinavia

    George joined Roskill in 2017, His initial focus was on the mining side of the industry before later moving into a more sales-orientated role. George focusses on developing the company’s European business.

    Prior to joining Roskill, he worked in the precious metals sector for over 10 years.

    George graduated from the University of Reading with a BA in Business Economics.

  • Yoshiyuki Ishido

    Yoshiyuki Ishido

    Business Development Manager – Japan

    Yoshi joined Roskill’s regional office in 2019. As the business development manager, he strengthens the sales team for Asia and facilitates relationships with analysts and customers in Japan. He has over 20 years’ experience managing, developing and building client bases. Over the last 4 years he has specialised in developing client relationships in commodity, financial trading, research and consultancy sectors.

    Yoshi holds Bsc in business Administration from Aoyama Gakuin University.

  • Christine Duggan BA

    Christine Duggan BA

    Sales Administrator

    Christine may well be your first point of contact with Roskill. She will help you with your inquiries, send you more information if you need it, and take your order. Christine is the main person behind Roskill’s international reputation for fast, efficient service.

  • Annie Li, BA MBA

    Annie Li, BA MBA

    Marketing manager China

    Annie Joined Roskill’s Shanghai office in 2019 and focusses on the marketing for Roskill China. She is also responsible for the office management and contribute to China-focused analysis for ferroalloy industry.
    Prior to joining Roskill, Annie worked for CRU and S&P Global in both analysis and business development areas. She has 8 years experience in business development across metals and mining industry , and 6 years experience as price analyst for flat steel products.
    Annie got her BA in Business English from Zhengzhou University and is on her MBA course at Fudan University.

  • Zoe Cripps

    Zoe Cripps

    Marketing executive

    Zoe joined Roskill in 2019. As the marketing executive she manages Roskill’s social media channels and wider marketing strategy. Prior to joining Roskill, Zoe was an independent Social Media manager and copywriter. She is also experienced in partner development, PR and administration from her time with global It company ESP.  

    In 2017 Zoe achieved the Digital Mums Social Media Managers Award.

  • Trevor Williams BA DipLib MA

    Trevor Williams BA DipLib MA

    Librarian and Information Officer

    Trevor is responsible for the company’s information requirements both in paper and electronic formats, including the maintenance and content of the company’s extranet. He works closely with the company’s analysts and consultants to meet their information requirements.


  • Johann Weibe

    Johann Weibe

    Associate Consultant

    Johann has over a decade of experience analysing the precious and base metals markets at Refinitiv and CRU. In 2020, he joined Roskill’s Sustainability and Cost Analysis Team and is focused on developing the company’s portfolio of socio-economic analysis. In his previous role at Refinitiv, he was responsible for precious metals research, with a keen focus on downstream sectors such as automotive. He also managed several key long-standing client relationships, covered desk-based and on the ground research in Europe and the Americas. He is a frequent speaker at global metals & mining conferences, roadshows and client events.

    He holds a BA in Management, Economics and Law Studies from the University of Utrecht in the Netherlands and an MSc in International Economics from Kingston University in the UK

  • Teboho Sebetlela

    Teboho Sebetlela

    Associate Consultant

    Teboho joined Roskill in 2020 and is focussed on supply cost analysis for the steel alloys market. He is responsible for developing and maintaining cost models with an initial focus on chromium and manganese. Teboho holds an MSc in Geology from the University of Cape Town, with a research focus on quantitative modelling of geodynamic processes.

    Prior to joining Roskill, Teboho worked as a consultant in mining and mineral exploration where he was responsible for the management and execution of greenfields and brownfields projects for a variety of client organisations including major miners and junior explorers. He has consulted on operations throughout Southern Africa and in Saudi Arabia across a broad range of commodities including chromium, platinum group metals (PGMs), cobalt, copper and gold. While working in mining and mineral exploration, Teboho played a key role in marketing development stage projects in Zambia and the DRC as part of his clients’ capital raising efforts, through regular interactions with potential investors. He has regularly contributed to code compliant mining technical reports and media releases and has presented at conferences in South Africa for both his consulting work and academic research.