Gilman Hall Room 307 University of California

University of California at Berkeley campus, Berkeley, California

Map 

Description 

On February 23-24, 1941, in this small research laboratory at the University of California at Berkeley, the man-made element Plutonium was first identified. Had it not been for that momentous discovery at this site, neither the atomic explosives used in 1945 to end the War with Japan, nor the subsequent development of nuclear energy reactors would have been possible. -- National Historic Landmark statement of significance, December 21, 1965

National Register information 

Note: The following information comes from the NRHP database and has not been verified.
Status
Posted to the National Register of Historic Places on October 15, 1966
Reference number
66000203
NR name
Room 307, Gilman Hall, University of California
Area of significance
Science
Level of significance
National
Evaluation criteria
A - Event
Property type
Building
Historic function
Research facility
Current function
College
Period of significance
1925-1949
Significant year
1941