The used tyres left by the commercial vehicles in the mining industry in Argentina and other Latin American countries are discarded and accumulated in some strip mining nearby areas. That is to say, they are not recycled, which causes a growing environmental pollution problem. This text is based on a project which started on the exhaustive analysis of the structure of the off-theroad (OTR) used tyres left in the mining industry and the study of the physical and chemical properties of the steel involved in them. The hardness values obtained and the evidence of the heat treatment in the metallographic study of the steel have shown that It presents elastic characteristics. All these aspects are fundamental in the cutup design. This is necessary to define the design criteria relating to the cutting stages equipment for the mining activity tires. In the first instance, the device should have the property of being mobile in order to be placed to different locations where such tires accumulate. This would make a first selection of the tire components and significantly reduce the volume of material to be moved to the final processing plant.