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While the world’s attention has been focused on the exponential advances being made in robotics and artificial intelligence, technological development in mechanical exoskeletons has largely been overlooked. Exoskeletons are wearable devices designed to bolster human performance in physically demanding tasks by supporting various body parts, including the hands, lower and upper back, legs, shoulders and arms. This reduces the amount of energy required when lifting and carrying heavy objects and holding heavy tools.

A solar power generating facility recently developed by a South African gold mine has made use of Zest WEG’s locally manufactured transformers to serve this specialised application. Factors like harmonics or ‘noise’ in the current flow mean that solar photovoltaic (PV) applications require specialised transformers, explains Rynard Potgieter, Sales Manager for transformers at Zest WEG. At this site, where 40 MW of renewable energy is being generated, the company supplied 10 of its custom-designed transformers of 5 MVA capacity each. The units for this PV project were manufactu...

The careful alignment of screens and crushers in processing makes for optimal throughput and efficiency, by ensuring that all settings and parameters are ideally matched. “The Kwatani product can now give their vibrating screen customers added benefits in this regard, being part of the global Sandvik group – which is well known for its crushing solutions,” says Kenny Mayhew-Ridgers, Regional Business Director at Sandvik Rock Processing Solutions South Africa. “The advantage is that the Kwatani screens can be specified and optimised with Sandvik’s range of crushers...

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Global climate change issues and environmental, social and governance pressures continue to attract significant attention, not least regarding the impact of coal on the environment. Some investors are divesting from companies involved in fossil fuel extraction, including banks and other funding institutions, which are increasingly limiting access to finance for the development of new coal-fired power stations and thermal coal mines. Many governments have pledged to reduce greenhouse-gas emissions under the Paris Agreement to avoid the worst effects of climate change, which is, consequently, im...