Trevor Hatherton, 1924–1992

As director of the Geophysics Division, Department of Scientific and Industrial Research, Trevor Hatherton initiated a wide-ranging programme of research into the narrow earthquake zone beneath New Zealand. In 1967 Hatherton and W. R. Dickinson, of Stanford University, coined the term ‘Benioff zone’, which has been adopted worldwide for such seismic zones.
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Robert Cecil Hayes, 1900–1977

Although working in isolation for much of his career, R. C. Hayes made a major contribution to international seismology from his observation of earthquakes, and helped lay the foundations for what later became called plate tectonics.
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James Healy, 1910–1994

James Healy was a government volcanologist, based in Rotorua, from 1945 to 1971. An urgent need for power generation in the North Island after the Second World War led to the start of geothermal investigations, in which he played a leading part for many years. After retiring, Healy undertook several major overseas geothermal investigations.
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Montague Ongley, 1888–1976

After studying at Otago university, Mont Ongley joined the New Zealand Geological Survey in 1914, and remained there for over 35 years. Known for his eccentric ways and disrespect of authority, it was a surprise when he was appointed director in 1945. Ongley expanded the organisation over the next five years, increasing staff and introducing new research areas.
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