The technology experience of passing stone gate actual mining in combined mining thick coal seam and economic benefit in Xinan coal mine are introduced.
介绍了新安煤矿厚煤层综采跨石门回采的技术经验及取得的经济效果。
The technology experience of passing stone gate actual mining in combined mining thick coal seam and economic benefit in Xinan coal mine are introduced.
介绍了新安煤矿厚煤层综采跨石门回采的技术经验及取得的经济效果。
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