Abstract: An improved method of extracting minerals from ore is described. The method is applicable to vat leaching operations and may also be useful in heap leaching operations. The method involves the pre-heating of comminuted ore prior to the agglomeration phase. The method is found to improve the quality of the agglomerate and to reduce the curing cycle time. In addition, the method described herein induces extra heat into the agglomerated mass which, as well as enhancing the agglomerate quality, adds heat to the leach solution resulting in higher mineral recoveries. The method is especially useful in the winter months when ore temperatures are low; however, improved results are realized when the method is used in the summer months as well.