![Technology / Water / Longwall mining / Coal / Witbank / Groundwater / Open-pit mining / Acid mine drainage / Room and pillar / Mining / Coal mining / Underground mining Technology / Water / Longwall mining / Coal / Witbank / Groundwater / Open-pit mining / Acid mine drainage / Room and pillar / Mining / Coal mining / Underground mining](https://www.pdfsearch.io/img/26f3fa96b186b1b93187be1d6755b905.jpg)
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City Belfast / Vereeniging / Natal / / Company Abstract The Witbank / Witbank / Karoo Supergroup / / Country South Africa / / Event Environmental Issue / / Facility Witbank dam / Middelburg Dam / Vaal River catchment / mine Figure / / IndustryTerm opencast mining / pillar mining / long history coal mining / impact mining / mining / chemical reaction / acid-producing chemical reactions / longwall mining / acid producing mining method / Coal mining / / NaturalFeature Highveld river / Vaal River / Wilge River / Olifants River / / Organization University of the Witwatersrand / Water Research Commission / School of Geosciences / / Product Koss P 7 Headphone/Headset / / ProvinceOrState Nebraska / / Technology fracturing / /
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