The following is based on Van Buren design documents and is not canon.
The Hoover Dam design document for the Van Buren project (Black Isle's canceled Fallout 3) was leaked from a top secret source on October 1, 2005, at No Mutants Allowed. It was written by Damien "Puuk" Foletto and is a complete description of all places, characters, and quests at the Hoover Dam.
Contents[]
The original document has been split into five parts for reading at the wiki.