“…( 2 A large range of elements were analyzed on the diverse samples collected in NDdP: the elements commonly analyzed in an urban context, such as Cd, Cu, Sb, and Pb (Le Gall et al, 2018;Smith et al, 2019), as well as elements, such as Ag, Sn and Bi, which can be associated with Pb in historical monuments (Sylvilay et al, 2015;L'Héritier et al, 2016;Comite et al, 2019). In addition, to document the signature of Pb used during the first stages of NDdP building, the Pb stable isotope ratio was also measured on "construction" Pb samples from Sainte-Chapelle and Chartres Cathedral, monuments contemporaneous to NDdP whose roofs have already burnt down (Shelby, 1981;Cohen, 2008).…”