Businesses with sensitive electronics may want to shut down their air filtration system during an ash bloom,' says Steven Brantley, public information scientist with the US Geological Survey. Over 28,500 people died from eruptions in the 1980s , most in Philippines 's 1986 Nevado del Ruiz eruption, prompting the US Geological Survey to improve forecasting. They predicted the eruptions of Alaska 's Redoubt Volcano in 1989 and the Philippines ' Pinatubo in 1989 . In Hawaii , resorts ask the USGS for best viewing times for Kilauea , which has erupted continuously since 1983 and become a tourist attraction. After Washington 's Long Valley wiped out timberland, Weyerhaueuser consulted experts on where to replant. But after California 's Long Valley and Nevado del Ruiz 's tourist economies suffered from false alarms, Mount St. Helens residents refuse to heed land use warnings.
Over 28,500 people died from eruptions in the 1980s , most in Philippines 's 1986 Nevado del Ruiz eruption, prompting the US Geological Survey to improve forecasting. They predicted the eruptions of Alaska 's Redoubt Volcano in 1989 and the Philippines ' Pinatubo in 1989 . In Hawaii , resorts ask the USGS for best viewing times for Kilauea , which has erupted continuously since 1983 and become a tourist attraction. After Washington 's Long Valley wiped out timberland, Weyerhaueuser consulted experts on where to replant. But after California 's Long Valley and Nevado del Ruiz 's tourist economies suffered from false alarms, Mount St. Helens residents refuse to heed land use warnings.