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The Scientific World Journal
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2014
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Article
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Fig 12
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Research Article
The Static Breaking Technique for Sustainable and Eco-Environmental Coal Mining
Figure 12
Crack expansion actual results.
(a)
The number 1 surface
(b)
The number 2 surface
(c)
The number 4 surface
(d)
The number 5 surface
(e)
The number 3 surface