Figure 1. Distribution of the copper deposit as a result of different types of main roof strata

A. Central Region represented by a 160 m to 220 m thick suite of roof strata lithologies, namely anhydrites and dolomites that cover most of the district’s area. The compact, high strength rocks of this suite form a stiff layer prone to rock bursts. It rests directly on the top of the ore-bearing series and is a source of dynamic phenomena while subjected to mining.