An internationally renowned expert volcanologist has told the White Island trial that by his calculations tours to the island presented a one in 20 chance of a "mass casualty event". And in a document shown to the court, New Zealand's volcano monitor GNS Science had observed: "The three Buttle brothers all seemed to understand the need for robust risk management …
The criminal trial into the White Island disaster has heard GNS Science changed how it assessed risk to its own staff after a "near miss", but the volcano monitor did not have a role in passing advice to the owners of Whakaari. On Wednesday, the court heard Prosecutor Kristy McDonald question Dr Jolly on the details of the current GNS …