1.   But many hiking trails remain closed.

2.   For authorities, the trail remained cold.

3.   He used his resources to help insure that riding and hiking trails would remain available to everyone.

4.   It is not yet clear how long countryside trails will remain off limits.

5.   Other tests in the park showed no PCBs, and the park trails remain open to the public.

6.   Though the trail Tuesday remained cold, officals emphasized that bioterrorism cannot be ruled out.

7.   But the trail remains, the original crater-pocked track paralleled by a newer paved highway.