11.   The company used helicopters to avert picketers who have blocked trucks from entering the plant since the strike began, she said.

12.   The House has also challenged Bush on the issue, voting last month to block Mexican trucks from driving beyond the commercial zone.

13.   The House has already challenged Bush on the issue, voting last month to block Mexican trucks from driving beyond the commercial zone.

14.   The students, who at first lay on the ground to block troop trucks, finally agreed to leave Saturday morning.

15.   The workers blocked a truck, insisting that the profits from the metal were rightfully theirs.

16.   There was more trouble between Israelis and Palestinians in the Gaza Strip, where Palestinian police blocked trucks carrying building supplies from reaching the Israeli settlement of Netzarim.

17.   They have blocked delivery trucks and clashed with the police.

18.   A U.N. convoy entered northwest Bosnia to relieve drastic food shortages on Friday, but Croatian Serbs blocked Red Cross trucks also trying to bring food to the hungry.

19.   A U.N. convoy entered northwest Bosnia to relieve desperate food shortages on Friday, but Croatian Serbs blocked Red Cross trucks also trying to bring food to the hungry.

20.   Air Force rescue planes scoured the Himalayan expanse late Monday to survey the devastation and possible access routes to villages after relief trucks were blocked by landslides.