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Sep 13, 2016 In the gold and PGM mining environment in South Africa, it is important to have this defined to a distance of between 30 and 50 m ahead of the mining face. Fig. 1: Layout of a gold mine. In tabular mining, stopes are mined at heights of between 1 and 2 m and mined as 30 m units on strike, at dips of between 8 and 25 degrees (see Fig. 1).
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