And there is always the danger of the rest of it collapsing.
These are experienced rescuers and seem to know the best course of action for the situation.
This is an excerpt from the article. -Tom
"Experts are using dogs, sonar, cameras and have created trenches to navigate below the pile, Mayor Daniella Levine Cava of Miami-Dade County said on “Face the Nation” on Sunday. One trench is 125 feet long, 20 feet wide and 40 feet deep".