Nick has worked on the development of laser ablation ICP-MS methods for the analysis of tiny fragments of volcanic glass, and has applied this to studies of tephra from around the worls, including particularly the USA, Canada, New Zealand, Iceland, Santorini, Indonesia and most recently Chile. Nick also has research interests in metal mine remediation and environmental geochemistry. Research Interests Tephra studies in the eastern Mediterranean, New Zealand, Indonesia (Toba), Western USA (Yellowstone, Mt St Helens), Yukon/Alaska and Southern Chile. Development of laser ablation ICP-MS methods for tephra analysis. Mine drainage remediation. Environmental geochemistry.