July 2007 UTC Yes I have found some of those sources on the website Apparently you were correct to concentrate on the excavation methods as the foundation seems to be very un interesting I was expecting an elaborate deep foundation system Apparently it is just a spread footing cast on rock I looked for a natural place in the article to integrate that but I am not sure where it should go I did however add a sentence from one of those sources on why slurry walls were used instead of conventional methods 00 51 11