Fig. 3

Concentrations of Cu and Pb in femoral cortical bone (µg g⁻¹) differentiate rural communities (yellow) from towns (red): Horsens’ Ole Worms Gade and Tirup (a) and Haderslev Cathedral and Nybøl (b). Values < LOQ are marked at the LOQ-value, which is shown as a dashed line; that is, all rural Tirup and Nybøl skeletons have Cu concentrations below LOQ. Shown for comparison are Cu and Pb concentrations reported by Grattan et al. [20] for Jordanian copper smelters (c)