1.   A strict blackout was imposed in Pyongyang, and the populace was crowded into underground shelters as air raid sirens wailed.

2.   But some utilities have warned that they will impose blackouts if voluntary cuts in power use are insufficient.

3.   Enron imposed a blackout last fall when its stock was unraveling.

4.   It would have barred corporate contributions and imposed fund-raising blackout periods of up to a year before the primary.

5.   Moreover, the official commission in charge of determining the cause of the two explosions that sent the sub to the sea floor has imposed a blackout on information.

6.   News agencies, including Reuters and Agence France-Presse, reported the testimony before the judge imposed the blackout.

7.   Still, the state was on the verge of imposing rolling blackouts of homes and businesses.

8.   The WWII sinkings set off a wave of hysteria along the East Coast, but it was months before a blackout was imposed.

9.   Police also took out a court order imposing a blackout on the investigation.

10.   A drop in power demand and cooler than expected weather allowed the state to avoid imposing rolling blackouts in order to protect the power grid from a major crash.