A wealth of leading industry knowledge & experience


Digby Glover

Chief Executive Officer

• BSc Mechanical Engineering.

• MBA (cum laude).

• Government Certificate of Competency (GCC).

• Respected industry specialist with 26 years Mining, Minerals, Project Management and Consulting experience.

• Has 13 years of executive leadership experience within the industry and has been instrumental in guiding a multi-national mining and mineral consulting company through a major growth and expansion phase.

• Appointed as CEO of UMS Group in November 2018.

Robert Hull

Group Chief Operating Officer

• BSC Mining Engineering.

• GDE Mineral Economics.

• ECSA Pr.Eng.

• PMP.

• Mine Manager Certificate of Competency and Mine Overseer Certificate of Competency.

• Industry specialist with greater than 20 years Mining, Minerals, New Energy, Project Management and Consulting experience.

• Appointed as COO of UMS Group in April 2021 after Executive and Directorship of a multi-national Mining, Mineral, Chemical and New Energy consulting company.

Murray Macnab

Group Technical Director

• NHD  Mechanical Engineering.

• GCC (Mechanical Engineer – Mines).

• Dip Project Management.

• 35 years’ experience in the mining and minerals processing industry and is internationally respected for his shaft sinking knowledge.

• Is an expert on and shaft sinking capital projects and a frequent speaker at global mining conference.

Graham Roberts

Managing Director: UMS METS

• GDE (Mining Eng).

• B-Tech (Mining Eng)

• PMP.

• Mine Managers Certificate.

• Member of Southern African Institute of Mining & Metallurgy (SAIMM) and Association of Mine Managers.

• 30 years of diverse mining experience.

Takalani Randima

Managing Director: UMS SHAFT SINKERS

• Bachelor of Engineering (Mining Engineering).

• Master of Engineering in Project Management.

• Mine Overseer Certificate of Competency, Mine Manager Certificate of Competency, Onsetter Certificate & Blasting Certificate.

• Member of Southern African Institute of Mining & Metallurgy (SAIMM).

• Extensive experience in mining construction, contract mining and project management across various commodities.


Dr Pieter Louw

Group Executive: Project Services

• MSc (Engineering).

• PhD.

• Government Certificate of Competency (Electrical &Mechanical).

• Project Management Professional (PMP).

• 37 years broad international experience in executive, operations, engineering and project management roles in the hydrocarbons, mining infrastructure, mining and metals sectors.

Karl Wiehl

Group Executive: Engineering Technical Services

• BSc (Eng)(Mech); MSc (Eng)(Mech).

• PrEng.

• Project Management Professional.

• 27 years international mining industry experience from concept studies, engineering design and fabrication of all surface and underground infrastructure, to project execution.

• Experience in managing multi-discipline engineering projects.

• Key strengths lie in engineering innovation and practical problem solving.

Chris du Toit

Group Executive: Risk Management

• NDipl in Safety and Management (NADSAM).

• Mine Overseers Certificate of Competency.

• Dipl Enterprise Risk Management.

• Registered Pr. CHSA.

• 30 years risk management experience including enterprise risk management and risk driven integrated safety, health, environment and quality management systems.

• Extensive experience in the mining, mineral processing and construction sectors.

Pieter de Frey

Chief Financial Officer

• 25 years financial experience.

• CA (SA).

• Member of Institute of Chartered Accountants SA.

Cherine Hoffman

Group Legal Counsel

• LLB (Cum Laude); LLM; Post graduate certificate in Mining Law.

• Admitted Attorney to the High Court of South Africa.

• 12 years post admittance experience in Corporate, Commercial, Mining and Construction Law.

• Logistics and risk Management.

Guenther Hellhoff

Group Executive: Business Services

• MA (Psychology).

• Reg HPCSA.

• 35 years HR, Organisation Management & Communications experience within the construction and mining sector.

James Keir

Group Executive: Information Systems Integration

• BSc (Eng)(Mech).

• Project Management Professional.

• 16 years’ experience in large scale multi-disciplined mining construction projects from design to construction.

•  Integration of project management systems and workflows to ensure the required information is available when and where it is needed.