I have heard from a grape in the vine that EG&G Special Projects is no longer the general contractor at the Groom Lake base. As of 2000, it is now CSC Applied Technologies.
EG&G supposedly still has the transportation contract (running the Janet flights), but CSC handles the operation of the base. (Although the Air Force "owns" the base, the general contractor handles everything from food to maintenance.)
There's a jobs listing at the CSC website. It may provide some corroboration (but my connection is too slow to load it).