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Advances in Civil Engineering
/
2018
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Article
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Tab 7
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Research Article
Research on Inpit Dumping Height during Tracing Mining Period between Two Adjacent Surface Coal Mines
Table 7
Secondary stripping amount and the cost with 1160 elevation dumped of Heidaigou surface coal mine.
Year
Secondary stripping tonnage (m
3
× 10
6
)
Stripping unit price (yuan)
Secondary striping cost (million yuan)
2015
8.86
12
106.31
2016
12.88
12
154.51
2017
12.13
12
145.54
Total
33.86
12
406.36