The opening date for the quarry has been set for Tuesday, October 4th! That date is the 96th anniversary of the creation of the original 80-acre monument in 1915.
More information about the new buildings and dedication updates can be found at www.nps.gov/dino/parknews/grand-opening.htm
The news article mentions that if the buildings are finished early they'll begin using them to work out kinks. Ooh, I'm so excited!
Please remember, there is a fantastic ranger-led hike to see bones in situ until the re-opening in October. It may be the last chance to touch dino bone in formation! (I have a feeling they're gonna take that pleasure away from us in the new quarry~)
*Pixie*Edited: 10:39 pm, June 01, 2011