Listen to professor Chris Newhall's amazing lecture on precursors, processes, and muddy aftermath of the Pinatubo 1991 eruption, held at University of Iceland on 1 October 2013.
Dr. Chris Newhall is a professor at the Earth Observatory of Singapore and former USGS volcanologist. He is a member of the FUTUREVOLC scientific advisory board and participated in the FUTUREVOLC first annual meeting 23-26 September 2013.
The full title of the talk is "The largest eruption on Earth in the last 100 years: Precursors, processes, and muddy aftermath at Mt. Pinatubo".
A link to slides and talk: