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|London Underground is the oldest and one of the deepest Metros in the world. The temperature of the Underground has been increasing over the last 100 years, mainly as a consequence of increases in train service. Further increases in train service are planned in the coming years to meet the predicted growth in passenger demand. Unabated, the additional service will increase temperatures on the Underground. London Underground Limited (LUL) has therefore set up the Cooling the Tube Programme (CTP) to tackle the issues of thermal conditions on the Underground. Some of LUL?s studies and cooling methods have borrowed experience and techniques from the mining industry; some of methods used or proposed may in turn be of interest to the mining community. This paper presents a background into the sources of heat on the Underground network, the manner in which the heat is presently dissipated, the analysis of future temperatures and criterion and a number of means and methods being used or proposed to cool the network in an environmentally sensitive manner.|