Event:
Mount Arenal, Costa Rica kills 80 in Pelee-type eruption
More Notable Events on July 29:
1984 23rd Summer Olympics opens in Los Angeles
1978 Pioneer 11 transmits images of Saturn and its rings
1958 President Eisenhower signs NASA and Space Act of 1958
1952 1st nonstop transpacific flight by a jet
1938 Olympic National Park forms
