The picture from Microsoft earth that was posted is BNSF’s Interbay Diesel shop in Seattle.
The Diesel shop is off to the far left, and the shorter long building next to the run thru is a load test cell. We were required to build this to keep the nieghbors happy on Magnolia hill which is way to the far left off the screen shot.
http://local.live.com/default.aspx?v=2&cp=ry7zrh4t1c2g&style=o&lvl=1&scene=3693288
The long extension to the roundhouse to the right is the backshop and drop pit, and to the right of that is the wheel trueing machine building. The Drop Pit is located in the roundhouse, covering the last two stalls before you enter the backshop extension. There is a large overhead crane in the backshop and also crane in 3,5, and 12 stall.
FYI Best regards, Gary P.