rivalling those facing the engineers developing early space flight are those faced by
today's mining engineers. South Africa's Gold
mines are getting deeper, with workings below 4,000metres becoming a
task is developing air cooling to allow the miners to work in tolerable conditions.
Without innovative solutions to tackle the problem heat exhaustion and heatstroke are real
surface based cooling is not sufficient for the depths required and combined surface and
underground solutions will be needed.
air heating resulting from *autocompression, is one of the problems to be
Ice delivery is an emerging technology which looks very
Hopefully some passive cooling
techniques can be developed to mitigate the escalating cost of energy. Supplying
factory processes that require medium grade heat are another
Another application related to mining is the long term underground storage of Nuclear Waste.
taken from the surface and then sent down to the workings will
experience a compression. This means that although the volume of
air has been reduced, the amount of heat remains the same resulting in
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