These are left over Space Shuttle External Tank hardware. The tank consists of three parts, an oxygen tank on top, a hydrogen tank on the bottom and an intertank between them. From the left is a hydrogen barrell, an aft ogive and forward ogive. The last two parts make up the cone of the oxygen tank .
With Obama cut backs and the shuttle program winding down, are there many people there working? Too bad you couldn't get in there with a 4x5 or 8x10 and do some shooting. looks like it has some very nice abstract shot.