Inside the Cascades Volcano Observatory in Vancouver, Wash., SALI the robot weighs small crucibles holding sediment.SALI ...

On May 18, 1980, after a series of earthquakes and venting, Mount St. Helens in Washington State erupted, depositing ash in 11 states and causing volcanic mudslides. Approximately 57 people were ki… ...

The Mount St. Helens' eruption in Washington on May 18, 1980 is the worst volcanic eruption in U.S. history, killing 57 people and spewing 520 million tons of ash across the U.S.

The May 18, 1980, eruption of Mount St. Helens killed 57 people, according to the USGS. Most people died from asphyxiation or trauma from pyroclastic flows, a mix of rocks, ash, and gas, the USGS ...

Mount St. Helens, the largest volcanic eruption in US history, was commemorated this weekend, 45 years after its eruption, which killed 57 people and spewed ash across 11 US states and 5 Canadian p… ...

Weyerhaeuser Co. forester Byron Rickert looks over some of the 150,000 acres of land near Mount St. Helens, Wash., Oct. 29, 1981, from which his company is saving trees damaged by the eruption of ...

CASTLE ROCK, Wash. — In this week's Let's Get Out There, it's been 43 years since the 1980 eruption of Mount St. Helens. We look back at how the landscape changed back then, and how it continues ...

The museum displays victims' equipment and belongings, ... Wash. — Dozens of items that survived the 1980 eruption of Mount St. Helens are once again on display for the general public.

The museum displays victims' equipment and belongings, ... Wash. — Dozens of items that survived the 1980 eruption of Mount St. Helens are once again on display for the general public.

Sunday marks 45 years since Mount St. Helens erupted in Washington state. The deadly eruption happened shortly after 8:30 a.m. on May 18, 1980, following months of small explosions and earthquakes.

The Mount St. Helens' eruption in Washington on May 18, 1980 is the worst volcanic eruption in U.S. history, killing 57 people and spewing 520 million tons of ash across the U.S.