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to the role of the coal mine surveyor but also surveying in general. The Institute of Mine Surveyors of South Africa (IMSSA, 2005) ...
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Back — The roof or upper part in any underground mining cavity. Backfill — Mine waste or rock used to support the roof after coal removal. Barren — Said of rock ...
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a. general provisions . 87.1 b. [reserved] . 87.11 c. surface coal mines: minimum requirements for information on environmental resources . 87.41
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