There was a set of apartment buildings that simply tipped over. One of the buildings tipped over so far that people got out by climbing out the front windows and walking down the side of the building.

It was a very important, pioneering study.

The limits along the highway of the collapse were controlled by what the materials that the highway was sitting on -- in this case, the bay mud. This has nothing to do with the liquefaction problem. This has to do with the shaking problem.

Doc was an extraordinary person. He was a gentle man and a very nice person -- a very patient, constructive person.