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Advances in Civil Engineering
/
2018
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Article
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Tab 5
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Research Article
Research on Inpit Dumping Height during Tracing Mining Period between Two Adjacent Surface Coal Mines
Table 5
Secondary stripping amount and the cost with 1130 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
2.23
12
26.71
2016
6.98
12
83.73
2017
6.53
12
78.31
Total
15.73
12
188.76