1. A safe mining approach for deep outburst coal seam groups with hard‐thick sandstone roof: Stepwise risk control based on gas diversion and extraction. Issue 8 (25th May 2020) Authors: Liu, Tong; Lin, Baiquan; Xiao, Wu; Liu, Ting; Yang, Wei; Wang, Zheng; Zhang, Ruigao Journal: Energy science & engineering Issue: Volume 8:Issue 8(2020) Page Start: 2946 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗