Mount Saint Helens, 1980-1987

(5230) CBS News interview of Dick Cadle and Bill Zinser regarding Mount Saint Helens volcano, April 13, 1980; (5231B) Mount St. Helens in Washington, copy, April 14, 1980; (5255) NBC News interviewing Dick Cadle and Steve Schneider regarding Mount St. Helens, May 21, 1980; (5266C) Sample of Mount St. Helens volcanic ash at high altitude, taken from U-2 aircraft flight, June 12, 1980; (7088B) Mount St. Helens and other weather satellite pictures, June 16, 1987.