The simulator Maximum Flyrock from Back Row depends on equations which are based on the fundamental laws of Physics, of Chemistry, and of Rock Mechanics.  It simulates flyrock of the normal type, i. e. projections due to the normal action of an explosion on a rock fragment located on a free face of the second row.  A simulation first calculates the launch velocity of each fragment projected from the top free face of the bench of a back row; it uses this launch velocity together with the launch point of a given fragment to calculate the range and altitude of the flight trajectory, and stores these in a data base.  Then the simulator seeks in this data base the maximum value of the ranges of the different fragments as well as the maximum value of the altitudes.  The maximum range and the maximum altitude are not usually associated with the same fragment.  Finally, the simulator graphically displays the trajectories of these flyrocks of maximum range and of maximum altitude projected from a back row, as well as the numerical values of these maximum range and maximum altitude.