“…Following salvaging and preservation measures, it is now conserved in the Archaeological Museum of Bilbao, including iron nails extracted from the wreck. Estalayo et al [ 29 ] studied four of these iron nails showing obvious alteration using the non‐destructive analytical techniques μ‐Raman spectroscopy (514‐ and 532‐nm laser) and energy‐dispersive XRF microspectrometry. A high‐resolution XRF map (25‐μm step width) of a nail cross‐section revealed very different element distribution patterns (Fe, Cu, Mn, K, Ca, S, Si, Ti and Zn) which were the result of quite different alteration processes.…”