1.   Thames Valley Police threw up roadblocks on the stretch of motorway leading to the airport.

2.   At every turn, a roadblock is thrown up, until at times it becomes difficult to see where the road is going.

3.   A major roadblock was thrown up last week when Senate Republican Leader Trent Lott, R-Miss., used a parliamentary procedure to prolong debate on the measure.

4.   A new target, the mammal, had a new feature in its blood, platelets, which aid clotting and would have thrown a roadblock at ticks.

5.   A roadblock was thrown up in front of the building.

6.   Businesses closed, buses stopped and roadblocks were thrown up across city streets and in some rural areas.

7.   Crime bill opponents still threw up roadblocks, but the outcome was inevitable once the procedural vote was taken.

8.   Gov. Fife Symington has thrown a roadblock into the path of tribal casinos planned for the fringes of neighboring Scottsdale.

9.   New roadblocks were thrown up.

10.   Roadblocks reportedly were thrown up in the area throughout the day in hopes of turning up suspects.