I was just looking at some pictures, here on Yahoo!, of the fallen towers and all the debris:'( There was such an extreme amount of debris, how did they possible move it all, and what did they do with it?
Cranes, dump trucks, and a lot of time and patience.
3/4 is the shaft size where you put the sockets onto the wrenchwith an adaptor you can use 3/8 1/2 inch drive sockets to any size sockets for bolt heads from 3/8 to 1-1/2