This volume includes the archaeological and archaeometrical analysis of the lead finds from the Roman Republican military fort of Sanisera in northern Minorca. The fort was built after the Roman conquest of the island in 123 BC and abandoned during the last third of the 1st century BC. By correlating typological-archaeological and scientific methods, the site’s unusual large number of lead objects/artefacts are examined within their find context and reviewed for superregional connections to contemporary sites within the Mediterranean. Furthermore, based upon the results of the find analyses as well as the examination of written sources, the site’s embedding within the historical context of the development of the late Roman Republic and early Imperial times is presented, especially in respect to the conquest of the Mediterranean and the consolidation of the Roman authority there.