シルヴァニア・エレクトリック・プロダクツ爆発事故
1 2 “Nine Injured In Atomic Lab Blasts”. Pittsburgh Post-Gazette. Associated Press: p. 2. (1956年7月3日). https://news.google.com/newspapers?nid=1129&dat=19560703&id=eSgNAAAAIBAJ&sjid=BmwDAAAAIBAJ&pg=4985,347025
1 2 “No Radiation Threat Seen In A-laboratory Blast”. St. Petersburg Times. Associated Press: p. 2. (1956年7月3日). https://news.google.com/newspapers?nid=888&dat=19560703&id=n6RSAAAAIBAJ&sjid=M3YDAAAAIBAJ&pg=7412,1311234