Reliable evaluation of in-situ stress is an important issue for the analysis and design of undergroundexcavations,particularly for evaluating the stability of underground structures to prevent failure or collapse.A low-costand reliable technique for the estimation of the full stress tensor based on acoustic emission(the Kaiser effect)has beendeveloped at the WA School of Mines over last five years.This paper presents the results for a feasibility study where fourAE measurements for an Australian mine have been carried out.The results are compared well with those obtained by theconventional hollow inclusion over-coring method(HI Cell).The advantages of the AE technique are that it is relativelycheap,non-time consuming and is applicable to in-situ stress measurements at depth in remote regions. Reliable evaluation of in-situ stress is an important issue for the analysis and design of undergroundexcavations, particularly for evaluating the stability of underground structures to prevent failure or collapse. A low-costand reliable technique for the estimation of the full stress tensor based on acoustic emission (the Kaiser effect) has been developed at the WA School of Mines over last five years. This paper presents the results for a feasibility study where fourAE measurements for an Australian mine have been carried out. The results are quite well with those obtained by the convention The advantages of the AE technique are that it is relatively cheap, non-time consuming and is applicable to in-situ stress measurements at depth in remote regions.