Summary Image: The contents of one of the Bronze Age cassiterite pits from Truro, showing muller, cassiterite pebbles and processed cassiterite ore (photograph Sean Taylor, Copyright Cornwall Archaeological Unit).
Figure 1: The analysis of a stone tool from the Beaker structure on the Sennen pipeline. With no obvious surface indications that the artefact had been used in metalworking, pXRF analysis of the surface confirmed Sn residues on the stone in high concentrations.
Figure 2: An 'experiential' casting of replica Bronze Age metal items by Neil Burridge, with a small ceramic container using charcoal and a directed air supply. Ignoring the modern tools(!), what evidence would be left by this process if the tools are removed? A heated pit/hearth structure and charcoal.
Figure 3: Key sites discussed in the text with evidence of metalworking. Sites with direct evidence of working marked with circles; sites with indirect evidence of metalworking marked with triangles.
Figure 4: Final plan of the excavation of Roundhouse 1 (Tremough, Cornwall), showing the location of the finds in the house, and the metalworking hearth .
Figure 5: Excavation photographs of Tremough Roundhouse 1, showing: A) Pre-excavation shot of hearth  with pottery finds in-situ on top; B) Mould fragment found near hearth  during excavation, and C) Final excavation shot of Roundhouse 1, with the hearth highlighted by the circle.
Internet Archaeology is an open access journal. Except where otherwise noted, content from this work may be used under the terms of the Creative Commons Attribution 3.0 (CC BY) Unported licence, which permits unrestricted use, distribution, and reproduction in any medium, provided that attribution to the author(s), the title of the work, the Internet Archaeology journal and the relevant URL/DOI are given.
Internet Archaeology content is preserved for the long term with the Archaeology Data Service. Help sustain and support open access publication by donating to our Open Access Archaeology Fund.