Pre-breaking Blasting in Deep Hole for Chasm Rock Excavation on Speedway

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doi:10.3969/j.issn.1672-7428.2004.04.027

2004 No. 4

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Pre-breaking Blasting in Deep Hole for Chasm Rock Excavation on Speedway[J]. DRILLING ENGINEERING, 2004, (4): 62-64. doi: 10.3969/j.issn.1672-7428.2004.04.027

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Pre-breaking Blasting in Deep Hole for Chasm Rock Excavation on Speedway[J]. DRILLING ENGINEERING, 2004, (4): 62-64. doi: 10.3969/j.issn.1672-7428.2004.04.027