Chemical and isotopic analyses reconstruct multi-scalar copper circulation networks in West Africa: evidence from Akjoujt and Walaldé, 1st millenium BCE – 1st millenium CE - Jay Stephens; Antoine Courcier; Alioune Deme; Thomas Fenn; Susan Keech McIntosh; Roderick J. McIntosh; Guillaume Sarah; Virginie Renson (Archaeological and Anthropological Sciences, 2026)