1. Barczak TM (2000) Optimizing secondary roof support with the NIOSH support technology optimization program (STOP). In: Proceedings of the 19th International Conference on Ground Control in Mining, July, pp 77–83
2. Barczak T (2005) An overview of standing roof support practices and developments in the United States. In: Proceedings of the Third South African Rock Engineering Symposium: South African Institute of Mining and Metallurgy, Johannesburg, Republic of South Africa, Oct, pp 301–334
3. Barczak T, Tadolini S, Zhang P (2007) Evaluation of support and ground response as longwall face advances into and widens pre-driven recovery room. In: Proceedings of the 26th International Conference on Ground Control in Mining, Aug, pp 160–172
4. Campoli AA (2015) Selection of pumpable cribs for longwall gate and bleeder entries. In: Proceedings of the 34th International Conference on Ground Control in Mining, July, pp 80–82
5. Esterhuizen GS (2012) A stability factor for supported mine entries based on numerical model analysis. In: Proceedings of the 31st International Conference on Ground Control in Mining, July, pp 1–9