Executive Team


 

Profile
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Jeff Leaver

Non-Executive Chairman
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Jeff Leaver is the Non-Executive Chairman of Digby Wells Environmental. He holds an Honours Degree in Social Science from the University of Natal, as well as various Management qualifications. Jeff entered the mining industry in 1983, joining the Anglo American Corporation Gold Division. He progressed through Anglo American and De Beers ending as Head of Human Resources for De Beers Consolidated Mines Limited. Following his departure from De Beers in 2006 Jeff consulted to a number of government departments and worked on several strategic and general management assignments for various diamond and gold companies. This included a two-year assignment in Indonesia as the General Manager of a diamond mine. Until mid-2017 Jeff was the Chief Operating Officer of Letšeng Diamonds in Lesotho, a subsidiary of Gem Diamonds, a company listed on the London Stock Exchange and which he was the Acting Chief Executive Officer of Letšeng. Having entered semi-retirement in late 2019, Jeff continues as a Senior Project Manager at Gem Diamonds.
Nombini-Mehlomakulu
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Nombini Mehlomakulu

Non-Executive Director
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Nombini is the Non-Executive Director of Digby Wells Environmental, and Managing Director for Lwazi Capital, the 30% BEE shareholder to Digby Wells Environmental. Prior to this, Nombini held the position of International Manager: Social Performance for Anglo American plc., her responsibilities included working with operations in South Africa, Latin America and Australia. Before that Nombini was the Head of Investor Relations for the Sage Group, a financial services company. Nombini started her career in advertising and went on to hold executive marketing and communications roles at WIPHOLD and Umsobomvu Youth Fund. Nombini completed her BA Honours Political science degree in 1995, and has since completed a range of additional qualifications including that of General Management (Harvard Business School), Investment Decisions Associated with Mining (Imperial College, London), Advanced Social Management Programme for Anglo American Executives (Cambridge University jointly with the University of Queensland), Management Advancement Programme and Certificate Programme in Accounting and Finance (Wits Business school).
Danie-Otto
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Danie Otto

Executive Director
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Danie Otto is a Director and Manager of Southern Africa at Digby Wells. He holds an M.Sc in Environmental Management with B.Sc Hons (Limnology, Geomorphology, GIS and Environmental Management) and B.Sc (Botany and Geography). He is a registered Professional Natural Scientist since 2002. Danie has 24 years of consulting experience within the mining industry undertaking Environmental Assessments and compiling Environmental, Water & Waste Management Plans. He has wetland and geomorphology working experience across Africa including specialist environmental input into various water resource related studies These vary from studies of the wetlands of the Kruger National Park to swamp forests in central Africa to alpine systems in Lesotho. He further has physical implementation experience with constructing wetlands and ecological rehabilitation.
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Lucy Stevens

Executive Director
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Lucy Stevens, Director of Digby Wells Environmental has BA and LLB degrees from the University of the Witwatersrand and a Masters Degree in Environmental Management from the Rand Afrikaans University, South Africa. Lucy is an admitted attorney of the High Court of South Africa and specialises in environmental law. She has ten years of experience in this field which includes undertaking environmental legal compliance audits, due diligences, legal reviews, overseeing environmental impact assessment studies and providing legal advice in both the mining and non-mining sectors throughout Africa.
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Graham Trusler

CEO (Founding Partner)
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Graham Trusler is one of the founding partners of the company and is the CEO of Digby Wells Environmental. He holds a MSc (Engineering) and a BCom. Degree. He is a registered professional engineer with the Engineering Council of South Africa. He is also registered as a Chartered Chemical Engineer with the Institution of Chemical Engineers, is a member of the Water Institute of South Africa and a lifetime member of the American Society of Mining and Reclamation. Graham has 30 years of experience within the mining industry in metallurgical production, research and environmental issues.
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Roger Williams

Non-Executive Director
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Roger is a Chartered Accountant with over 20 years’ international experience in mining finance, and with an honours degree in French and Spanish. After 10 years at Randgold Resources including 5 years as Group Finance Director, Roger went on to become Chief Financial Officer of JSE-listed AECI Limited before moving to BSG Resources Limited. He has served on a number of boards in the mining and mining services sectors, including Sylvania Platinum where he has been a non-executive director since 2011, chairing the Remuneration Committee and the Audit Committee. After various interim roles at Digby Wells Environmental, including acting CFO and commercial executive, he was appointed Non-Executive Director in July 2017. He heads up the Finance and Risk Committee at Digby Wells and is also currently a non-executive director of AfriTin Limited and part-time CFO of Stibium Mining.

Management Team


 

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Mamadou Dembele

Country Manager: Mali
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Mamadou is the Country Manager for Digby Wells Environmental Mali. He has a Master’s degree in Socio-Anthropology from the University of Mali and a Master’s in Project Management Cycle, Development Program and Policy at DELTA-C Mali. Mamadou has over 13 years’ experience in Environmental and Social works. After working for two NGOs and a local Environmental and Social company, Mamadou joined Digby Wells in 2015. His experience is focused on the mineral industry in Mali, having worked on various projects throughout Mali, Senegal, Ivory Coast and Democratic Republic of Congo. He is well versed in Malian legislation, as well as international standards, including IFC, World Bank Operation Policies. He has worked on numerous Environmental and Social Impacts, Community Development Plans, Social baseline and Artisanal and Small-Scale Mining Assessments.
Justin du Piesanie
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Justin du Piesanie

Divisional Manager: Social and Heritage Services
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Justin du Piesanie is a Heritage Management Consultant and is an accredited archaeologist. He has a Master of Science (MSc) obtained from the University of the Witwatersrand in 2008 specialising in the southern African Iron Age and has attended courses in Architectural and Urban Conservation conducted the University of Cape Town. Justin is an active member of the Association of Southern African Professional Archaeologists (ASAPA) and the International Council on Monuments and Sites (ICOMOS) South Africa. He has been involved in a variety of heritage studies, including Archaeological Mitigation, Heritage Statements, Heritage Impact Assessments, Chance Find Procedures, Burial Grounds and Graves Surveys, and Grave Relocations in South Africa, the Democratic Republic of Congo, Liberia and Mali.
Leon Ellis
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Leon Ellis

Divisional Manager: Closure and Rehabilitation Services
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Leon is the Mine Closure and Rehabilitation Divisional Manager at Digby Wells. Leon completed his BSc. (Hons) in Geography and Environmental Management at the University of Johannesburg (UJ) in 2009. He joined Digby Wells in January 2013. He has nine years’ experience in the environmental services sector with specialised focus on Environmental Liability Assessments, Mine Closure Plans, Performance Assessments and Risk Assessments, locally and internationally. He has also been involved in the undertaking of Environmental Impact Assessments (EIAs) and Environmental Management Programmes (EMPs). Leon also completed the Environmental Risk Assessment and Management course based on ISO 31000 at the Centre of Environmental Management (North West University) in 2016.
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Richard McDonald

Chief Financial Officer
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Richard has completed his MBA through GIBS and is a registered Chartered Accountant with the South African Institute of Chartered Accountants. He has more than 15 years experience in various industries including commodity trading, mining, bulk materials handling, processing, power generation, fixed plant, agriculture, engineering and construction.
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Duncan Pettit

Regional Manager - UK, Jersey, East and Western Africa
Duncan Pettit
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Duncan is the Digby Wells Environmental International (UK) and Jersey Director. Duncan has worked at Digby Wells for 7 years and his experience included many jurisdictions with a focus throughout Africa. This has included but not limited to South Africa, Namibia, Democratic Republic of Congo (DRC), Malawi, Cameroon, Côte d’Ivoire, Mali, Senegal and Egypt. He also has experience in Turkey. Duncan’s technical role has focused on Project Management, environmental permitting and sustainability for numerous mining projects of various commodities, as well as linear infrastructure projects.
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Mompoloki Lettie Pitlagano

Country Manager: Botswana
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Mompoloki Lettie Pitlagano (Lettie) holds the position of Country Manager, Botswana. Lettie completed a Bachelor of Science (Bsc.) in Biology and Environmental Science in 1998 and a MSc in tropical Ecology and Natural resources Management in 2005. She has been working in Environmental Management for over twenty years. Lettie is well versed with various aspects of the Environmental Impact Assessment process ranging from the review of mandatory reports, to undertaking ecological assessment and to monitoring compliance of project’s implementation process to Environmental Management Plans. Lettie has extensive experience in implementation of Environmental Management Systems (ISO 14001) and she is an internal lead auditor.
Mashudu Rafundisani
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Mashudu Rafundisani

Country Manager - South Africa; Manager - Surface Water
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Mashudu is a Director and a Country Manager for Digby Wells South Africa. He holds an Honours Degree in Environmental Management from the University of Venda (South Africa) and he is registered as a Water Resource Scientist by the South African Council for Natural Scientific Professions (SACNASP). Mashudu has 8 years’ experience within the Mining and Environmental industry undertaking environmental assessments, specialist hydrological work, hydrological modelling, water quality, water and salt balances, water conservation, demand and supply assessments, environmental/water resource audits and EIA projects. Mashudu has played a role in Digby Wells’ organisational business development, project management, field works, and technical report writing on projects within various sectors including mining, infrastructure development, agriculture, and energy resources. Mashudu’s additional roles include leading the Hydrology Unit under the Water Geosciences Division of Digby Wells.
André van Coller
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André van Coller

Country Manager - Jersey; Divisional Manager - Water Services
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André van Coller holds an MSc in Geohydrology from the Institute of Groundwater Studies, University of the Free State with specialisation in geochemistry. He has over 10 years’ experience in the mining and environmental industry working as a geologist, hydrogeologist and environmental geochemist. André has experience in the mining industry with water supply, dewatering, geochemistry, water and salt balance and EIA projects and played a role in both the project management, management of field programs, data processing and reporting. His current focus is on mine water management that includes surface water, groundwater and geochemistry assessments and management plans considering site wide impacts and mitigations. André is also the Divisional Manager for Water Services at Digby Wells and leads an international team of hydrologists, geohydrologists and geochemists. His international experience includes projects in USA, Canada, Peru, Dominican Republic, Pakistan, Sierra Leone, Liberia, Ghana, Mali, Ivory Coast, Senegal, DRC, Tanzania, Zambia, Namibia, Botswana, Zimbabwe, Mozambique, Malawi, Lesotho and South Africa.
Barbara Wessels
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Barbara Wessels

Executive: Technical Services
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Barbara Wessels completed her B. Sc. in Geography and Environmental Management at the University of Johannesburg and has over 14 years’ experience. She is responsible for Group Technical Services which includes social and heritage, environmental management and compliance, GIS, ecology, air quality and noise, aquatic and wetland services, surface and groundwater as well as rehabilitation and closure. She has global experience in various environmental disciplines with a focus on integrated project management and compilation, review and auditing of Environmental and Social Impact Assessments.