1. Pack design at Betws Colliery;Smart;Inst. Min. Eng.,1982
2. Application of the roof strata tilt approach to pack design;Smart;Inst. Min. Eng.,1984
3. Modification Of Pack Component Moduli By The Introduction Of Lateral Restraint;Haley,1986
4. Stability Of Underground Workings In The Soft Rocks Of The Coal Measures;Wilson,1980