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Keyword [Extent of protection]
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1. Determine The Protection Scope And Inspect The Protection Effect Of Protective Seam Mining Of The Wang Xingzhuang Coal Mine
2. Investigation On Protection Range In Exploiting The Upper-protective Coal Seam Under The Igneous Rock
3. Research On The Relief Scope Of Influence And Eliminate Outburst Effect Of Protective Seam Mining Of The Wang Xingzhuang Coal Mine
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