1.   Workers excavated around the structure, waterproofed it and left the natural limestone walls unadorned.

2.   It said Somboon Somalee was found standing in chest-deep mud covered with debris from the broken roof of his house when rescue workers were excavating dead bodies.

3.   The workers will excavate loose concrete, then return later to fill in the water-damaged areas, Mindel said.

4.   Workers have been excavating the last mountain of debris at the site, a six-story heap where the south tower once stood.