Directors and Management Team
Dr Aleksander J. Mendecki: Chairman and Head of Research
Aleksander graduated from the Silesian University of Technology in Poland with a PhD in seismology in 1981 where he also worked as an Assistant Professor. In 1985 he took a position as a Head of the Seismology at Anglo American Co-orporation in South Africa. From 1991 he was appointed the Managing Director and Head of Research at ISS International Limited (ISSI) and from 1994 also the Managing Director of ISS Pacific (ISSP). In 2010 he founded the Institute of Mine Seismology in Australia and in South Africa, which acquired both ISSI and ISSP, and became its Chairman and Head of Research.
His main areas of expertise are: monitoring seismic rock mass response to mining, quantification of seismic sources and near-source ground motion, deterministic and probabilistic seismic hazard assessment in mines, and the application of quantitative seismology to rock mass stability. He is the editor and the main author of the book “Seismic Monitoring in Mines” published by Chapman and Hall in 1997 in London.
Dr Richard Lynch: Managing Director and Head of Rock Physics
Richard has a PhD in theoretical Physics from University of the Witwatersrand in South Africa. From 1999 until 2010 he has worked at ISS International on problems of high resolution microseismic monitoring in underground mines, underground coal mines and open pit slopes. His research has included work on continuous seismic records, different types of seismic sensors, tracking of cave fronts using microseismic methods and controlled sources for Active Seismic Monitoring. He has been involved in monitoring of hydro-fracturing in a geothermal field, monitoring of hydro-electric caverns and site characterisation for a nuclear power plant. From 2008-2009 he was Business Development Manager at ISSI, and Operations Manager of ISSI in 2010.
Dr Dmitriy Malovichko: Director and Head of Applied Seismology
Dmitriy has a degree of candidate of phys.-math. sciences (~PhD) from Institute of Physics of the Earth (Moscow, Russia). From 2000 until 2009 he was working in Mining Institute (Perm, Russia) doing seismic observations in regional and local scales (potash mines, karst caves) and analysing corresponding data. In 2009 he moved to a cooler (actually warmer) place joining ISS International. There he took part in seismological services for mines (routine seismic hazard rating, investigation of large seismic events) and research projects.
Dmitriy enjoys inferring information about seismic sources and properties of the rock mass from seismic signals. From 2004 up to 2009 he was a head of Laboratory of Natural and Induced Seismicity at Mining Institute UB RAS. From 2009 he was a manager of seismological services in ISSI.
Dr Ernest Lötter: Director and Head of Computational Seismology
Ernest has a PhD in Mathematics from University of Stellenbosch in South Africa, focusing on the study of towers of algebraic function fields. After finishing his degree, he joined ISS International in 2006. He started on location problems, using ray-tracing to perform cave front tracking. Thereafter he took over the development of the seismological processing software, developed it as an extensible platform for providing seismological services, and worked on seismic source characterisation. As part of the research and development programme, he has written kinematic modelling software, worked on seismic source directivity characterisation and enjoys developing massively parallel codes to solve computationally hard problems.
Since 2010, Ernest has been working on the next generation seismological processing software, and looks forward to extracting more useful information from seismic data in a routine manner than the classical models allow for, in particular with respect to exploiting continuous data and directivity effects.
Errol de Kock: Director and Head of System Engineering
Errol has a MSc in Physics and Electronics from Rhodes University. After more than 10 years in the military electronics field he joined ISS International in 1991. He has worked on the engineering side of the ISS product range especially in embedded software development. For many years he has installed and commissioned ISS systems around the world, and as a result has a wealth of experience in the planning and support of mine seismic monitoring systems and their integration with other geotechnical systems at customer sites.
Frans Cronje: Director and Head of Technical Services
Frans started working for ISS International at the end of 1999 taking responsibility for installations and maintenance of the Seismic Systems installed in South Africa. At the end of 2002 he was relocated and appointed as the Manager of ISS Pacific Pty Ltd, Australia until the end of 2007 during which time the number of operational systems in Australia quadrupled. After relocating back to South Africa, he was appointed as the Manager of Technical Services for both ISS International and ISS Pacific and also managed the Production Facility in South Africa until the end of 2010.
Gareth Goldswain: Director and Head of System Development
Gareth has an MSc in Electronic Engineering from the University of Cape Town in South Africa, with a background in mixed-signal electronics, instrumentation & control and intelligent systems. Since 2006 he has worked at ISS International as System Engineer, Developer and Manager, where his core focus areas have been: analogue and digital hardware design, embedded system design, as well as industrial communications & telemetry. From 2006 to 2008 he developed hardware and most of the embedded software for the 5th generation ISS system. His research has included low power wireless communication technology and energy harvesting for seismic monitoring in underground mines. From 2008 to 2010 he was System Development Manager of ISSI.
Kobus Franken: Director and Head of Finance
Kobus has a B.Com Hon in Economics from the University of the Orange Free State in South Africa. He is employed since 1990 at ISS International where he headed the Finance and Administration Department and was also responsible for the Finance and Administration of ISS Pacific Pty Ltd since 1994.
Olaf Goldbach: Business Development Manager (Africa)
Olaf obtained his MSc degree in Geophysics from the University of Witwatersrand in South Africa in 1990 whereafter he joined the Chamber of Mines Research Organisation (COMRO). During his 16-year career at COMRO (and later CSIR Miningtek) he became involved in a number of geophysics, mining and rock mechanics-related research projects. His primary interest was seismology and he developed his expertise in the field of mine seismic monitoring.
Olaf also spent five years at Snowden Mining Industry Consultants in Johannesburg where he developed his commercial skills. He joined IMS in August 2011 as the Business Development Manager. His responsibilities are to develop IMS’s client base in Africa and to provide routine seismological services to the platinum industry.
Dr Daryl Rebuli: Manager and Head of IMS Canada
Daryl has a PhD in Applied Nuclear Physics from the University of the Witwatersrand in South Africa. He joined ISS International in 2005 where he managed seismological services for global customers. He also undertook studies involving seismicity in caving and open-pit environments.
Since 2009 he has been involved in hazard assessment studies for deep gold mines in South Africa and in research projects developing methods of improving short term hazard assessments. He currently manages the IMS office in Canada.
Jacques Gerber: Manager and Head of Seismological Services (Africa)
Jacques has an MSc in Applied Physics from the Nelson Mandela Metropolitan University in South Africa. Since joining IMS in 2012, he has been involved in various research projects focusing on assimilation of seismic data with numerical rockmass modelling.
He currently manages the seismological services group in South Africa and is also involved in providing routine seismological services to the gold industry.
Cornel du Toit: Manager and Head of Seismic Data Processing
Cornel has an MSc in Mathematical Statistics from the University of Stellenbosch in South Africa. From 2005, he has worked at ISS International focusing mostly on seismic hazard and various location techniques. He also worked on the statistical aspects used in the data processing department.
Since 2012, Cornel has been working intensively on the automatic processing of waveforms and is currently managing the global data processing service.
Dolf Bredenkamp: Manager and Head of Technical Services (Africa)
He joined ISSI in 2006 as part of the system engineering team, where he applied his interests in modern communication technologies as well as digital and analogue electronics. He has experience in high-level and detail design of hardware and firmware for the IMS seismic data acquisition and supporting systems. Since 2014 Dolf is also responsible for IMS Africa’s manufacturing and technical services division.