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Telegram to Williams, Crown Surveyor - Smithsonian institution requests aerial photographs of the crater
Request from Smithsonian Intstitution for aerial photographs of the crater for US scientists. Only previous photographs from 1950/51.
Notice from Premier's office RE members of volcanology team - 11th December 1971
Composition of volcanology team, Peter Baker (Royal Society), Robert Citron (Smithsonian Institution).
Helicopter use
Objectives of crater expedition