45 years after blast, Mount St. Helens sediment still causes problems
Decades after Mount St. Helens' eruption sent almost 90 billion cubic feet of debris into the upper Toutle Valley, sediment ...
Silt, seeping water: Here’s what is hampering the SLBC tunnel rescue operation
Rescue teams including rat miners and National Disaster Response Force (NDRF) noticed water oozing out at the rate of 3,600 ...
The Columbian8d
45 years after blast, Mount St. Helens’ sediment still causing costly problems
A sediment retention dam has been in place for the past 36 years but it needs updating. That work has been delayed, leaving nearby cities to find their own solutions to drinking water needs and ...