(Seattle, WA)  --  Scientists say magma levels are slowly rebuilding inside Mount St. Helens, but there's no sign of an eruption occurring anytime soon.  The volcano erupted in May 1980, shearing the top off the majestic peak and resulting in 57 deaths.  It also spread debris over a 230-square-mile area and caused property damage totaling more than one-billion dollars.  The U.S. Geological Survey says the magma reservoir beneath Mount St. Helens has been slowly re-pressurizing since 2008, probably caused by the arrival of additional magma between two-and-a-half and five miles below the surface.