1. Horizontal stress and longwall headgate ground control;Mark;Min Eng,1998
2. Effects of panel mining sequence and retreat direction on the roof stability of longwall headgate entries;Chen,1998
3. Regional horizontal stress and its effect on longwall mining in the Northern Appalachian coal field;Su,1995
4. Roof geology mapping in underground coal mines;Su,1999
5. Influence of structural stress concentration and structural irregularity on longwall gateroad roof control;Su,2002