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Advances in Civil Engineering
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2018
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Article
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Tab 3
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Research Article
Research on Inpit Dumping Height during Tracing Mining Period between Two Adjacent Surface Coal Mines
Table 3
Secondary stripping amount and the cost with 1100 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
3.78.
12
4.54
2016
30.72
12
36.87
2017
33.68
12
40.42
Total
68.19
12
81.83