Volunteers Mzwandile Mkwayi (R) and Mandla Charles (L) were greeted as heroes after descending the mineshaft This story contains details, including a video, that some people may find distressing.

Often, valves designed for on-off service employ actuators and assemblies including linkages and shaft connections with severe inherent limitations that greatly reduce control-loop performance. This ...

Disturbing videos have emerged showing the dire situation at a disused gold mine in South Africa where scores of illegal miners have reportedly been living underground for months. They have been ...