Dr R. Alan Williams completed his PhD on the Great Orme Bronze Age copper mine in 2018 in the Department of Archaeology, Classics and Egyptology at the University of Liverpool, where he is an Honorary Research Fellow. He originally graduated with a BSc (Hons) in Mining Geology from the Royal School of Mines, Imperial College London, and after initially working in metal mining and exploration he had a long research career with the international glass company Pilkington (now NSG). He was head of the Raw Materials and Glass Compositions Department at the company’s international research centre and was responsible for sourcing glass-making raw materials in over 20 countries. Since taking early retirement in 2012 he has been applying his expertise in geochemistry, ore geology, mineralogy and pyrotechnology to important archaeological challenges in the field of prehistoric metal mining and smelting. He has written several papers and three books on historic and prehistoric metal mining areas in Britain and Ireland. He also has a long-standing interest in Bronze Age tin since working at Wheal Jane tin mine in Cornwall as a student geologist nearly 50 years ago. He jointly initiated the Leverhulme-funded Bronze Age tin project to determine whether the exceptionally rich tin deposits of Cornwall and Devon powered the major technological and cultural transition from copper to full tin-bronze across Europe and beyond. He is currently a Post-Doctoral Research Associate in the Department of Archaeology at Durham University. He was awarded the Ben Cullen Prize in 2020 by the Antiquity Trust and was elected as a Fellow of the Society of Antiquaries in 2022.