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This paper presents all the rock mechanics studies carried out at UCIL-Tummalapalle mine, Andhra Pradesh. The rock mechanics investigations in this mine includes, optimization of pillar dimensions by numerical modeling, feasibility of hangwall lode mining at shallow depth, support design for deeper levels, instrumentation to monitor the strata for an experimental hang wall stope, monitoring of pore water pressure at underground crusher chamber and surface subsidence monitoring. The main aim is to benefit the mine immensely in improving extraction ratio and the safety levels from these rock mechanics studies.