1.   At least some asteroids may be loosely aggregated rubble piles, which might be easily disrupted by a nuclear blast.

2.   Back at the trade center site, buildings around the rubble pile had their share of damage, with shattered windows, smashed walls and piles of rubble.

3.   Even the fires that had burned beneath rubble piles were spent.

4.   It watches as the rubble piles up, the streets grow more dangerous and the kindly local grocer has to cope with a desperate bread line.

5.   Rather than being solid rock, Mathilde is probably a rubble pile, a porous agglomeration of smaller rocks.

6.   Short-term recovery must not endanger long-term health by leading to higher interest rates and a new rubble pile of national debt.

7.   He said searchers had reduced the rubble pile at the front of the pit from three stories high to about the height of one story.

8.   He said two days before he was freed, he had heard rescuers tap three times on the rubble pile.

9.   He searched through the rubble of his store to recover what he could of his stock, then decided to use his newly acquired skills on other rubble piles.

10.   In Oklahoma City, cranes worked on the rubble pile Tuesday, slowly picking through the heaviest of the concrete chunks.