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IDENTIFICATON OF KEY PERFORMANCE AREAS INDICATORS IN THE SOUTHERN AFRICAN UNDERGROUND COAL MINING ... surface mining environment is the ... vs. or Seam in ...
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Longwall coal mining, an underground fullextraction method, can cause surface subsidence, affecting streams by creating a series of deep pools that trap sediment, reduce habitat diversity, and impair macroinvertebrate and fish communities.
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Coal mining | World Coal Association
Underground mining currently accounts for a bigger share of world coal production than opencast; although in several important coal producing countries surface mining .
Uranium: How is it Mined? New Mexico Institute of Mining ...
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Coal Ore | Minecraft Wiki | FANDOM powered by Wikia
Coal Ore is the most common ore, with the largest vein, in Minecraft, and it can be found on the surface in caves and cliffs while it can also be found anywhere underground from the dirt layer to... fandom
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Drift mining Wikipedia
Drift mining is either the mining of an ore deposit by underground methods, or the working of coal seams accessed by adits driven into the surface outcrop of the coal ...
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Coal Mines in South Africa African Mining Projects
Africa Mining IQ, a leading mining information source on coal mines in South Africa, lists the New Largo Project surface mine, and the Mafube Colliery as the largest coal mines in South Africa. The Mafube Colliery supplies million tonnes of coal yearly.
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162 APRIL 2010 VOLUME 110 NONREFEREED PAPER The Journal of The Southern African Institute of Mining and Metallurgy Figure 1—Good fragmentation (left) vs. poor fragmentation (right) at Kriel Colliery, (2008 photos by author)
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