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aggregation of coal seams

Sep 01, 2018 The primary seam is No. 4 coal seam with buried depth of 578817 m (680 m on average) and thickness of 0.826.20 m (the general thickness is 1015.00 m). The folds in Hujiahe Coal Mine area is shown as follows the group of folds includes two anticlines and two synclines. Fig. 10a and b are sketch maps of cross sections of each fold.

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