Figure 2. Location map and stratigraphy (Mukhopadhyay, 2010) of Begonia and Bellampalli coal mines

From

A Comparative Study of Various Empirical Methods to Estimate the Factor of Safety of Coal Pillars

A. K. Verma

American Journal of Mining and Metallurgy. 2014, 2(1), 17-22 doi:10.12691/ajmm-2-1-3