A Study of Millisecond Blasting on High Bench at Barun Iron Ore Operation by Pengfei Zhang, Runcai Bai, Xue Sun, Haoran Li, Honglu Fei, Shijie Bao

“…According to the technical conditions of the site, three sets of vertical boreholes at 310 mm diameter were drilled on 24 m high batter; and three sets of air-spaced charges were set up. …”
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