S. Kamara, Dr. Baila Leigh, Ajibola E. Manley Spaine, Cecil Akindele Osho Williams, UmaruDin Sesay, Allieu Badara Kamara, Major Gabriel Turay and Major John E. Milton.

The Prosecutor v. Augustin Ndindiliyimana, Augustin Bizimungu, Francois Xavier Nzuwonomeye and Innocent Sagahutu (Military II Case)

During this time, Johnston continued to visit Mount Augustine every summer and also assessed the geothermal energy potential of the Azores and Portugal.

Mount Augustine was also the site of an early near disaster for Johnston, when he became trapped on the mountain during an eruption after high winds grounded the first two evacuation aircraft.

Johnston's career took him across the United States, where he studied Augustine Volcano in Alaska, the San Juan volcanic field in Colorado, and long extinct volcanoes in Michigan.

The line from a drama of Terence, Homo sum, humani nihil a me alienum puto (or with nil for nihil ), meaning I am a human being, I think nothing human alien to me , known since antiquity through the endorsement of Saint Augustine, gained renewed currency as epitomising the humanist attitude.