Coaltech Research Association

A Provisional Basinal Study of the Waterberg-karoo, South Africa

R1500,00

Description

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Wetland rehabilitation with Dongalock shutters

2021

Two field trials, one on a mine affected wetland and one on an undisturbed site, both built by community members, plus a desktop comparison against engineering and cost criteria.

What this report foundCompared against concrete and gabions on cost, construction time, footprint, durability and safety, the Dongalock product proved cheaper and quicker to install...

R1500,00

R1500,00

What this report found

Compared against concrete and gabions on cost, construction time, footprint, durability and safety, the Dongalock product proved cheaper and quicker to install in small and medium incised valley bottom wetlands, and needs no heavy plant, so local enterprises can build it. Concrete still suits large wetlands carrying high water velocities.

The Estimation of Greenhouse Gas Emissions from South African Surface and Abandoned Coal Mines

2012

Direct sampling across burning, burnt out and rehabilitated dumps at surface mines covering just over half of national surface production, scaled to a national emissions estimate.

What this report foundGas sampling on coal mine dumps found rehabilitation very effective at cutting emissions.

R1500,00

R1500,00

What this report found

Gas sampling on coal mine dumps found rehabilitation very effective at cutting emissions. Even incomplete rehabilitation held carbon dioxide below about 1 kg per square metre a year, against over 100 on unrehabilitated ground and as much as 7 000 where combustion was active, though burning areas were small. Sulphur oxides, nitrogen oxides, ammonia and methane were low.

Identify Remnant Coal Deposits for Potential Exploitation by Small Business Developments

2002

Screening of near surface remnant coal for small scale miners in Mpumalanga, with a map of candidate areas and of ground already worked out.

What this report foundShallow coal suitable for small scale opencast working was mapped in the northern Witbank and Highveld coalfields, using a limit of 30 m from surface to the...

R1500,00

R1500,00

What this report found

Shallow coal suitable for small scale opencast working was mapped in the northern Witbank and Highveld coalfields, using a limit of 30 m from surface to the top of the first seam. Most outcrop areas examined proved already mined out, and depth to the top seam increases southwards, though some ground remains available. Obtaining resource data was the main obstacle.

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