1.   Snow prevented workers from reaching the broken pipeline.

2.   The firm uses electronic filters to prevent workers from accessing the Internet.

3.   The company has tried to prevent the workers from organizing.

4.   The next day clashes broke out in the occupied territories and Arab workers were prevented from entering Jerusalem.

5.   MANAGEMENT at Timex in Dundee failed yesterday to win a court order to prevent sacked workers from gathering near the factory gates as employees are bused in.

6.   And many plans prevent workers from saving as much as the law allows.

7.   A mud avalanche in an area that connects a road to the pipeline prevented workers from repairing damage from the attacks over the weekend and on Thursday.

8.   After the blast Friday, Israel sealed its borders with the West Bank and Gaza Strip, preventing Palestinian workers from entering.