UMK - United Manganese of Kalahari

Corporate Profile

Board of Directors

Prof. Taole Mokoena
Prof. Taole Mokoena served as a director at Johnnic, M-cell and African Partnerships to mention a few. He has notable academic and research experience in clinical surgery and laboratory immunology.


His professional leadership skill has seen him serve on a number of bodies such as the South African Medical Association and Health Professions Council of SA. He has also played a major role in several healthcare related businesses.
• Chairperson – Medical Research Council 
• Partner - Gautrain
• PhD Medicine

Lazarus M. Mbethe
Lazarus M. Mbethe the Director of UMK, is also the Executive Chairman of Pitsa Ya Setshaba (Pty) Ltd, and has practical business experience spanning over three decades.

Mr Mbethe’s practical experience in the general mining environment has been accumulated over the last 20 years. Mr Mbethe has a deep understanding of the governmental challenges, processes and visions with regards to black economic empowerment; he also has extensive knowledge of the workings of the Department of Minerals and Energy, and has over the years developed close working relations with the structures of the department.

Mamatho P. Netsianda
Mamatho P. Netsianda has been the Managing Director (MD) of Chancellor House Holding (CHH) (Pty) Limited since its inception in 2002, and the official opening of its doors for business in 2003.

Prior to being CHH MD, Mr Netsianda was the Senior General Manager at the South African Post Office, responsible for security and investigations. Mr Netsianda is an Honours Graduate in Political Science from the University of Ibadan (1979) and also holds a Certificate in Strategic Leadership and Defence Management from London’s Civil Service College. Mr Netsianda has worked extensively in the structures of the African National Congress (ANC) in exile and in South Africa. He has, at different times, served the ANC as an administrative secretary for both its National Scholarship Committee and its external Co-ordinating Committee; served on its Mission in London as well as an Assistant National Elections Co-ordinator in preparations of South Africa’s first ever democratic election of April 27, 1994. Following these elections he has served the new government in different capacities, becoming a Chief Director for Ministerial Services in the office of the Limpopo Premier, Deputy Director General for Policy, Programme and Budget with the Department of Defence, and deputising for the Secretary for defence as well as serving as acting Defence Secretary.

Maksim Goldman
Maksim Goldman is Renova Group Director of Strategic Projects since 2011. He coordinates the business development of the most significant assets under management of the Group.

Earlier since 2007, Mr. Goldman served as Deputy Director for Investments of Renova Group, responsible for implementing the investment policy and support of key M&A transactions.

In 2005-2007 he worked as Vice President of international legal projects of Sual-Holding, which provided legal support for the international activities of the company, and also took a significant part in the creation of UC Rusal through combination of assets of Sual-Holding, Rusal and Glencore. From 1999 to 2005 Mr. Goldman worked as an associate at Chadbourne&Parke LLP in New York and Moscow.

Maxim Goldman was born in Moscow in 1971. He graduated from the School of Law, University of California (Los Angeles). He also holds a Master of History at the University of California (Los Angeles)

Marco Musetti
Marco Musetti has been a Senior Officer at Renova Management AG, an investment management company based in Zurich, Switzerland since 2007. He currently serves as Chief Investment Officer.

Mr Musetti has been serving as member of the Board of Directors of Sulzer AG since 2011, on the Board of S&B since 2013 and on the Board of CIFC since 2014.
He was COO and deputy CEO of Aluminium Silicon marketing (Sual Group), (2000 to 2007), Head of Metals and Structured Finance Desk for Banque Cantonale Vaudoise (1998 to 2000), and Deputy Head of Metals Desk for Banque Bruxelles Lambert (1992 to 1998).

Binding interests
- Member of the Board of Directors, Schmolz + Bickenbach AG
- Member of the Board of Directors, CIFC Corp.
- Member of the Board of Directors, Sulzer AG

Educational background
- Master of Science in Accounting and Finance, London School of Economics and Political Science, UK
- Major degree in Economics, University of Lausanne, Switzerland

Konstantin V. Sadovnik
Konstantin V. Sadovnik* is the COO of Africa Operations for the Renova Group of Companies and Managing Director of Transalloys’ Ferro Alloys Plant in South Africa.

Mr Sadovnik has 16 years’ experience in Business Development and Management. Mr Sadovnik holds a BA Degree in International Economics from MGIMO (Moscow State Institute of International Relations) and an MBA from Insead.

Alternate Directors

Molebogeng Mbethe

Anel van Niekerk

Hilgard Rademeyer

Dimitri Gordine

Executive Management Team

Johan Heystek

Johan Heystek is the company's Chief Executive Officer (CEO). Johan completed a B Eng (Mining) degree at the University of Pretoria and an MBL at the University of South Africa. He is a registered professional engineer and obtained his Mine Managers Certificate of Competency.


Johan started at Iscor Ltd in 1985 and worked on mines in Kwa-Zulu Natal and Thabazimbi. In 1989, Trans-Natal Collieries (Pty) Ltd recruited him for various projects at their Koornfontein and Gloria mines. He was appointed Mine Manager of Gloria and Khutala Colliery, later becoming Operations Manager at Middelburg Mine Services before being appointed General Manager of Khutala in 2001.

In 2003 he became Vice President: Business Improvement for Ingwe Collieries (Pty) Ltd. Johan was responsible for the implementation of the Phenduka improvement process. Phenduka was a broad Ingwe performance improvement project, aiming to achieve a sustainable step change in the performance of the company.

In 2004 Johan was appointed Vice President: Operations of Ingwe Collieries. He managed all aspects of Middelburg Mine Services, Optimum Colliery, Douglas and Koornfontein Mines, with four General Managers reporting to him. These four mines produced a total of 68 million ROM tons per annum for the export and Eskom markets.

Johan assumed the position of CEO at Mashala Resources (Pty) Ltd in 2006. He manages all aspects of Mashala Resources, a private coal mining company and is responsible for the strategic direction of the company, as well as the expansion and maintenance of a well - balanced portfolio of reserves that will ensure the future financial wellbeing of Mashala Resources.

In October 2010, following a corporate transaction with Continental Coal Ltd (CCC), Mashala Resources became a subsidiary of CCL. Johan carried on with his responsibilities as CEO of Mashala Resources, as well as assuming the role of CEO of CCL and Ntshovelo (Pty) Ltd, a joint venture between Mbuyelo (Pty) Ltd and CCL.

People and safety are high on Johan’s agenda. “Under no circumstances can we compromise safety and health in our operations. In addition to that, most activities revolve around team contributions. In mining everyone must be a team player.”


Muthanyi Robinson Ramaite
Muthanyi Robinson Ramaite is the Deputy Chief Executive Officer. Through his directorships and interests in different areas of business, Robinson has been involved in a number of investment initiatives in the Property, Mining, Aviation and ICT sectors.

This includes exploring a number of opportunities with government and listed property companies. Robinson has also made valuable contributions in various transformation and empowerment initiatives.

Robinson holds a B. Juris from the University of the North and a Masters degree in Public and Development Management from the University of Witwatersrand. He also completed the Young Manager’s Programme at Insead University.

Danie Lourens
Danie Lourens is the Commercial Manager responsible for the overall purchasing and contract management of the company.

Danie started his mining career in 1984 when he joined Rand Mines as a management accountant in the coal division and served as Financial Manager in the Chrome, Gold and Coal Divisions. With the formation of Ingwe Coal Corporation in 1994, Danie was transferred to the head office where he held various positions including Area Financial Manager and Group Financial Manager. Danie was appointed General Manager of the Shared Services for the Coal division in 1999, pioneering the shared services concept in the South African mining industry. He was responsible for the procurement, information technology (including SAP implementation), payroll, accounts payable and inventory functions. In 2003 Danie became Commercial Manager for BECSA, and was extensively involved with the Eskom business and later also held a position as Marketing Manager (domestic coal sales and Eskom business). Danie joined UMK in July 2009.

Danie holds B. Compt (Hons) and MBL degrees from the University of South Africa and a Post Graduate Diploma in Financial Management from Free State University. Danie belongs to various professional bodies including SAIPA, SAICA and the Financial Planning Institute.

Board Sub Committees and Secretariat

Company Secretariat
Irma Warriner

Audit and Risk Committee Members
Anel van Niekerk
Anton Marx
Konstantin Sadovnik
Seithati Bolimpobo

Operations and Health and Safety Committee Members
Dimitri Gordine
Ephraim Sibanda
Hilgard Rademeyer
Kaelo Sedumedi
Konstantin Sadovnik*
Ravi Moodley

Remuneration and Human Resources Committee
Konstantin Sadovnik*
Maksim Goldman
Nolwazi Qata
Priscilla Tsitsi

Purchasing and Contracts Committee Members
Konstantin Sadovnik
Lazarus Mbethe
Mamatho Netsianda
Ori Phayane

Social and Investment Committee Members
Anel van Niekerk
George Mokgoro
Konstantin Sadovnik
Ron Langford

*Russian citizens