The Organized analysis to sensitivity of the leading indexes of the process of the boring - a mechanical velocity, the current boring meters and criterion “minimum of the cost 1 meter of the boring” to change the load on chisel, turn of the rotor, density and consumption of the bore solution, diameter chisel. The Purpose of the study is a determination of the influence different parameter on factors of the process, their numerical importance's sign depending on depths and geometries of the bore hole.