1.   A quarter-mile self-guided footpath leads the visitor around a microcosm of the blast zone.

2.   After clearing the blast zone, the next generation of trees was planted.

3.   That puts all of downtown Glendale, Phoenix and Tempe within the blast zone that would emanate from a catastrophic rail line explosion.

4.   Unlike most biological and chemical agents, radioactivity can linger for days, weeks, months or years in a blast zone, depending on the materials used.

5.   We were now in the blast zone, and for miles around trees lie scattered like toothpicks.

6.   Another will be carried by the Greenpeace vessel Rainbow Warrior II which plans to sail into the blast zone.

7.   Critics of the government say Australia should send a warship to the blast zone.