Please check back often as this is regularly updated. 1  Rim Exit Devices. 2  Rim Device: This type is used on single doors or pairs of doors that have a vertical mullion (either removable or fixed) in between the doors. The strike plate is surface mounted on the frame (or mullion).
Mikhail Gorbachev was the last General Secretary of the Soviet Union. He brought about massive economic, social, and political changes and helped bring an end to both the Soviet Union and the Cold War.
Upon Andropov's death in 1984, the aged Konstantin Chernenko took power; after his death the following year, it became clear to the party hierarchy that younger leadership was needed.[9] Gorbachev was elected General Secretary by the Politburo on 11 March 1985, only three hours after Chernenko's death.