Decades after Mount St. Helens' eruption sent almost 90 billion cubic feet of debris into the upper Toutle Valley, sediment ...

Nearly 45 years after Mount St. Helens' eruption sent almost 90 billion cubic feet of debris into the upper Toutle Valley, ...

An Iron Age settlement at the bottom of an Italy lake revealed more secrets. Superintendence of Archaeology, Fine Arts and ...

The sediment retention dam in Toutle has become less and less effective as it fills, switching from catching about 80% of passing sediment to allowing 80% to pass, according to ...

Rare evidence about the lives of an ancient group of arthropods has been uncovered in the U.S. The findings of the study are ...

At the same time, the city adopted a law requiring it to monitor the water quality in the cruise port. Haskell says a key issue is something called turbidity — how much mud and fine sediment is ...

It stated that it was fine silt which had occupied entire mishap site. For this it said gas welding cutters, including plasma cutters, to be used. In all eight gas welding cutters would be ...

A low-concentration plume of fine sediment particles left the monitored area at 4.5 kilometres distance. Using high-resolution 3D mapping of the seafloor, the researchers mapped the mining ...

Near the mining site, sediment concentrations were up to 10,000 times higher than under natural conditions, and returned to normal levels after 14 hours. Most suspended particles remained within 5 ...