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通过改革支护方式 ,采用松动爆破法等措施 ,在开采 10 Ⅱ 层煤的同时对 10 Ⅰ 层进行了开采回收
Through the reform of support methods, the use of loose blasting and other measures, mining 10 Ⅱ layer of coal at the same time on the 10 Ⅰ recovery of mining