Figure 4

Characteristic elements that can used for chemical imaging and matching bullet holes with the various types of ammunition (see circles in the Cu image with CBC Magtech (black), Speer Lawman (green) and Makarov (yellow), pixel scan time = 60 ms, a = Ba, b = Cl, c = Cu, d = Hg, e = K, f = Pb, g = Sb and h = Sr).