Fine coal particles and slurry ponds litter the Mpumalanga coalfields. An unwanted by-product of the industry, it presents a significant disposal challenge and an environmental hazard.

Lack of investment in new mines has led to SA’s coal supply dwindling. Eskom, which buys 120-million tons of coal a year, is in a tight spot as it looks to procure long-term coal supply at a reasonable price.

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