Volcanic ash fall--a "hard rain" of abrasive particles.

Bibliographic Details
Corporate Authors:	Geological Survey (U.S.), United States. Federal Aviation Administration, United States. National Weather Service
Other Authors:	Kenedi, Christopher A.
Format:	Government Document Book
Language:	English
Published:	[Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, 2000.
Series:	Fact sheet (Geological Survey (U.S.)) ; FS-00-27.
Subjects:	Volcanic ash, tuff, etc. > Washington (State) > Saint Helens, Mount. Volcanic hazard analysis > United States.

Evans: US Documents (Annex 5th floor)