1. Skinner, E.H., Structural Uses and Placement Techniques for Lightweight Concrete in Underground Mining, Report of Investigation 9266, Bureau of Mine, United States Department of Intereior, 1989.
2. McWilliams, P.C. and Gooch, A.E., Ground Support Systems in Block-Cave Mining, A Survey, BuMines IC 8679, 1975.
3. Bigby, D., Coal Mine Roadway Support System Handbook, Crown, UK, ISBN 0 7176 2899 X, 2004.
4. Liu, H.Y., Small, J.C., and Carter, J.P., “Full 3D Modelling for Effects of Tunnelling on Existing Support Systems in the Sydney Region,” Tunnelling and Underground Space Technology, 2008, vol. 23.
5. General Description and Arrangement of Face Supports, Durham Mining Musium ebook, Chapter 1, Crown, License Number C01W0000177, 2004.