Daan van Heerden
Director, Head of Mining Engineering
B.Eng. (Min. Eng.), M.Com (Business Admin), Dip. Data Metrics (Computer Science)
Daan has worked in the mining industry for 30 years. He has a vast amount of experience in managing underground and opencast mining operations in South Africa and abroad for both world-class mining majors and junior mining companies. He managed new business development for two major mining companies, one gold, the other predominantly platinum. He has experience in mining mergers and acquisitions and related activities such as valuation, due diligence, finance structuring and subsequent change management. Daan has also contributed significantly to ore reserve management, technical services, productivity improvement and operating cost reduction.
He also has significant study and project management experience.
B.Eng. (Mechanical Engineering)
Jano obtained his B.Eng. Mechanical Engineering in 2009 from the North-West University of Potchefstroom in 2009.
His career commenced at Anglo Platinum as part of a Graduate Program where he gained practical exposure and experience.
Whilst completing the training program he spent time at Anglo American Greenside Colliery, at shaft sinking projects and operations with boilers and mills. He gained valuable management experience and exposure to trackless mining, conventional mining, concentrator plants and smelters.
Upon completion of the Graduate Program, Jano was appointed as Section Engineer at Anglo American’s Tumela Mine, where he was in general charge of all machinery, including design, installation and maintenance thereof.
Jano has joined the Minxcon team in 2015 and his role involves mine infrastructure & design and capital estimation & scheduling, as well as quality assurance and project management.
N.Dip. (Mechanical Engineering)
Christiaan obtained his National Diploma in Mechanical Engineering from the Tshwane University of Technology in 2017. Once he graduated, he was employed as a contract manager by CMTI Consulting implementing mining machinery (XLP sweepers and drill rigs) at gold and platinum operations. In 2018, he was employed by ElectroWeb where he was mainly in charge of 3D design drawings and redesigning of electrical products and components in the mining and safety, as well as electrical LED lighting industries. Christiaan joined the Minxcon team in January 2019 as a junior mechanical engineer, consulting on various mining projects and a variety of commodities. He has valuable experience in manufacturing, mechanical design and mechanical draughting.
Senior Mine Planner
BSc (Earth Sciences)
BSc Honours (Geology)
Diane joined the team of Mining Engineers at Minxcon in April 2019. She is a registered professional geologist with 15 years post graduate experience. She started her career as an underground geologist at the Kloof gold mine and after three years of experience, she moved into a consulting role that provided project solutions to clients on a variety of mineral deposits around the world.
As a consultant, she has gained a vast array of knowledge of different environments, from open pit to underground, covering aspects such as exploration drilling and sampling, geological orebody modelling, grade control, resource modelling and technical report writing, mine design and scheduling together with software training, skills transfer, staff and project management.
She is currently a Senior Mine Planner at Minxcon working on a wide range of projects in various commodities focusing on projects solutions using predominately GEOVIA Surpac and MineSched Software.
Roelof van der Colff
Roelof joined the team at Minxcon in June 2018 as a Mining Engineer. His duties at Minxcon include Mine Design and scheduling, life of mine estimations, Feasibility Studies and acting as a Project Leader in designated projects. Roelof completed his BEng Mining Engineering degree in 2015. Commencing his career as a learner miner, he then completed his National Certificate in mining operations underground for coal in 2017. As a miner at Balindi Mining on Forzando South Colliery he gained production experience. He was later a Mining Engineer Intern for Exxaro Coal central, and had the opportunity to work with a variety of Mine Managers gaining a wide range of skills in an open cast operation. He has supervisory and management experience for coal mining operations.
Gerard joined the team at Minxcon in April 2020 as a Mining Engineer. His duties at Minxcon include mine design and scheduling, life of mine estimations and feasibility studies. Gerard completed his BEng Mining Engineering degree in 2015 as a Goldfields bursar. Commencing his career as learner miner, he then completed his National Certificate in underground mining operations for hard rock mines and Production Supervisor’s certificate in 2017. He gained production experience as a miner, shift boss and acting mine overseer at Sibanye-Stillwater on Beatrix Gold Mine. During his career in the gold mining industry, he had the opportunity to work on various shafts gaining a range of skills in underground gold operations. As a member of the Beatrix Proto Team, Gerard gained valuable experience in Mines Rescue Operations. He has supervisory and management experience for gold mining operations.
Senior Process Engineer
B.Eng (Chemical Engineering)
Dewald has experience in production management, leading technical and metal accounting services, technical consulting, R&D and process design. He gained significant production and technical experience at the Skorpion Zinc Hydrometallurgical plant in Namibia. As a Senior Process Engineer at Minxcon, he is responsible for leading process engineering work with his skills directed at the metallurgical discipline in all projects that involve processing from metallurgical accounting reviews to feasibility studies and onsite optimisation.
Director: Minxcon Projects
(NHD Ext. Met. Wits, GCC, BLDP (WBS), MMMA, FIMM),.
Dario has been involved in the Metallurgical and Mining Industry for over 38 years. He started his career with JCI in the platinum and base metal refineries. He later held management positions in the Gold and Uranium divisions. He also spent five years in Europe where he co-managed the Tungsten and Tin operations owned by Anglo American and was also the project leader of an EU sponsored program to recover metals from tailings dams throughout Europe. Before returning to SA he was consulting metallurgist for an RTZ Copper/tin mine in Portugal. He was the Group metallurgist for Harmony and later became the General Manager of an open cast gold mining operation.
He is currently working on a wide range of projects which include plant designs, pre-feasibility and feasibility studies, competent persons reports (CPR) and operational and technical consulting in a wide range of commodities which includes precious metals and base metals as well as coal and industrial minerals. Dario has broad range experience in the metallurgical industry locally and abroad in both processing, engineering and management of plants and mines.
Mardus Jansen van Vuuren
Operational Management – Process Optimisation and Control
Mardus has 26 years’ experience in gold plants. He has vast experience in crushing, milling, floatation, thickening, leaching and all processes associated with gold recovery and smelting.
He has also managed operating plants and has been involved in commissioning of new plants which includes training and implementation of management systems and gold plant management.
His current position at Minxcon Projects is that of metallurgical consultant and has been involved in implementing Short Interval Control at various plants, as well as doing audits and implementing best practice systems.