This option is available with the simulator <Displacement>.  The link How to design a blast using the BLASPA simulator explains that a blast creates a front of semi-static stress which propagates from the blast holes toward the free face of the bench, the intensity SS of this stress diminishing as the front advances.  In order to fully fragment the rock, the value of SS must exceed the value R of the rock strength under the action of a semi-static stress; hence a simulation allows the evaluation of SS at the face of the bench, and so allows the user to determine if SS exceeds R.  For a given bench blast procedure, the simulator <Displacement> with the option <Maximum Burden> calculates the intensity SS of the semi-static stress field by the time the latter reaches the face; this intensity is simulated for each column of explosive.  Knowledge of this SS, together with the To shock wave stress contour which predicts toe and blocks, allows the evaluation of the maximum burden possible with the blast method under study.