How this differs from a blasthole. The timing, interference and site-law amplitudes are real. The emission is a ripple-tank analogue: each charge radiates a multi-crest wavelet, where a real hole commits a single transient pulse. Each deck is also collapsed to one point source at its midpoint rather than radiating along the column, so there is no stemming / charge / base energy profile. Reflection, refraction, mode conversion and free-face interaction are not modelled.