Study on Ratinal Width of Protective Coal Pillar in Mining Gateway of Fully Mechanized Top Coal Caving Face in Soft Seam[J]. COAL SCIENCE AND TECHNOLOGY, 2011, (9).
Citation:
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Study on Ratinal Width of Protective Coal Pillar in Mining Gateway of Fully Mechanized Top Coal Caving Face in Soft Seam[J]. COAL SCIENCE AND TECHNOLOGY, 2011, (9).
|
Study on Ratinal Width of Protective Coal Pillar in Mining Gateway of Fully Mechanized Top Coal Caving Face in Soft Seam[J]. COAL SCIENCE AND TECHNOLOGY, 2011, (9).
Citation:
|
Study on Ratinal Width of Protective Coal Pillar in Mining Gateway of Fully Mechanized Top Coal Caving Face in Soft Seam[J]. COAL SCIENCE AND TECHNOLOGY, 2011, (9).
|