Physicochemical or geochemical

• Horwell, C. J., Sargent, P., Andronico, D., Lo Castro, M. D., Tomatis, M., Hillman, S. E., Michnowicz, S. A. K., Fubini, B., (2017), The iron-catalysed surface reactivity and health-pertinent physical characteristics of explosive volcanic ash from Mt. Etna, Italy, Journal of Applied Volcanology, 6(1): 12, 10.1186/s13617-017-0063-8
• Horwell, C. J., Hillman, S. E., Cole, P. D., Loughlin, S. C., Llewellin, E. W., Damby, D. E., Christopher, T., (2014), Controls on variations in cristobalite abundance in ash generated by the Soufrière Hills volcano, Montserrat in the period 1997-2010, The Eruption of Soufriere Hills Volcano, Montserrat from 2000 to 2010, Memoir of the Geological Society of London , Geological Society of London, Chapter 21. 39: 399-406, 10.1144/M39.21, Wadge, G. , Robertson, R., Voight, B.

Leaching, Physicochemical or geochemical, Toxicological

• Horwell, C. J., Baxter, P. J., Hillman, S. E., Calkins, J. A., Damby, D. E., Delmelle, P., Donaldson, K., Dunster, C., Kelly, F. J., Le Blond, J. S., Livi, K. J., Murphy, F. A., Nattrass, C., Sweeney, S., Tetley, T. D., Thordarson, T., Tomatis, M., (2013), Physicochemical and toxicological profiling of ash from the 2010 and 2011 eruptions of Eyjafjallajökull and Grímsvötn volcanoes, Iceland using a rapid respiratory hazard assessment protocol, Environmental Research, 127, 63-73, 10.1016/j.envewa.2013.08.011

Physicochemical or geochemical, Toxicological

• Hillman, S. E., Horwell, C. J., Densmore, A., Damby, D. E., Fubini, B., Ishimine, Y., Tomatis, M., (2012), Sakurajima volcano: a physico-chemical study of the health consequences of long-term exposure to volcanic ash, Bulletin of Volcanology, 74, 913–930, 10.1007/s00445-012-0575-3