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3D XRM grain with segmented tunnels correlated with SEM image of exposed grain and location of FIB-SEM volumes. (a) Location of SEM image/exposed surface in relation to the entire grain, and which segmented tunnel networks interact with it (networks 2, 3 and 7) (b). (c) Location of FIB-SEM volumes for trench 2 (tunnels/holes) (d, e) and trench 1 (crusts) (f, g). Trench 2 tunnels are identified as belonging to tunnel network 2 in Fig. 2.
