Coaltech Research Association

Economic Coal Resources of the Highveld, Ermelo, South Rand and Sasolburg-vereeniging Coalfields

Grant van Heerden

Comparative ranking of coalfields inside and outside South Africa on exploration level, resource size and infrastructure, for companies deciding where to explore next.

by Grant van Heerden | August 2004

What this report found

A rating and ranking system was applied to South African coalfields and, separately, to the coal bearing countries elsewhere in the Southern African Development Community. The Waterberg ranked highest in South Africa and is the coalfield most worth detailed investigation as Witbank output declines. Botswana ranked highest among the other member states on contained resources and exploitation potential.

R1500,00

Description

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What this report foundCo-treating coal discards with sewage sludge by hydrothermal carbonisation gave hydrochars with better physicochemical properties than treating either waste...

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What this report found

Co-treating coal discards with sewage sludge by hydrothermal carbonisation gave hydrochars with better physicochemical properties than treating either waste alone. The blended hydrochar reached a surface area of 20.35 m2/g and a pore volume of 0.38 cm3/g, and removed 97.19% of nevirapine and 93.32% of lamivudine from recycled water. Routes to activated carbon and hydrogen storage were also assessed.

Audit and Diagnostic Assessment of Productivity in Continuous Miner Sections

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Mine level study of the human and social influences on continuous miner section output, using interviews, focus groups, observation and work study at participating collieries, for mine managers.

What this report foundSection performance was limited by the will and motivation of the workforce, not by equipment, layout or technical competence, all of which were found sound.

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SGE Ashworth

What this report found

Section performance was limited by the will and motivation of the workforce, not by equipment, layout or technical competence, all of which were found sound. Team based bonus payments were the strongest motivator and reinforced cooperation across shifts and functions, but dependence on bonus income to meet monthly expenses turned it into a source of stress. Recognition in front of colleagues and family motivated strongly.

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