1. UNSW. Ground control principles and practice in underground coal mining. Lecture notes from module 5050. Strata Control Graduate Diploma. Kensington (NSW): University of New South Wales; 2010.
2. Colwell M, Frith R. AMCMRR—an analytical model for coal mine roof reinforcement. In: Proceedings of the coal operators’ conference. Wollongong (NSW): University of Wollongong; 2010. p. 73–83.
3. Colwell M, Frith R. Analysis and design of faceroad roof support (ADFRS). Final project report. Brisbane (Queensland): ACARP Project C19008; 2012.
4. Application of the coal mine roof rating (CMRR) to extended cuts;Mark,1999
5. Frith R, Colwell M. Why uniaxial compressive strength and Young’s modulus are commonly poor indicators of roadway roof stability–except in the tailgate. In: Proceedings of the coal operators’ conference. Wollongong (NSW): University of Wollongong; 2006. p. 17.