Author: "de Graaf WW" / Publisher: academy of science of south africa - Searchworks@Jio Institute Digital Library Search Results

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Start Over Author "de Graaf WW" Publisher academy of science of south africa

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1. Risks and challenges affecting opencast pillar mining in previously mined underground bord and pillar workings

Author: Ngwenyama, P.L., primary and de Graaf, WW., additional
Published: 2021
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