**Appendix A**

Determination of *Ex0* applied to the dolomite sample.

**Figure A1.** Determination of *Ex*<sup>0</sup> applied to the dolomite sample.

It is important to note that the lowest energy level *(E*1) must be as low as possible, to make the determination of *Ex*<sup>0</sup> more accurate. This graph differs from the probability graphs that are in the main report, as this highlights the importance of magnitude of impact energy. At Energy level 1 (*E*1), even after five impacts the probability of breakage is less than 0.2. This suggests that one may probably need hundred attempts to get breakage. At *E*<sup>2</sup> and *E*<sup>1</sup> each impact contributes significantly to raising the breakage probability, and only a few impacts are required to reach the probability of 1. One can extrapolate to the right to find the lowest energy that ensures 100% breakage probability with one impact. However, the main purpose of this graph is to establish *Ex*<sup>0</sup> and from the extrapolations of the lines convergence at point on the X axis, giving a value of *Ex*<sup>0</sup> to be 0.9 J.
