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Coal seam occurrence conditions and water disaster prevention and control in Tongzi area
Yang Huashen 1,2,3, Wang Tongbiao 1,3, Xi Dongdong 1, Wang Liuwen 1,3
1. Guizhou Coal Geological Engineering Co., Ltd., Guiyang 550025, China; 2. Tongzi County Industry and Energy Bureau, Zunyi 563200, China; 3. Guizhou Coal Mine Design and Research Institute Co., Ltd., Guiyang 550025, China


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