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.
On taking office in 1985 Mikhail Gorbachev faced one problem more daunting than all others combined. The Soviet economy had been in a period of stagnation for two decades and was in desperate need of reform. Gorbachev choose to adjust the old system with a period of perestroika or restructuring in the hope of making it more efficient.