Facts and Figures:

Congressional approval of site: Nov 1988
Construction began: July 1996
First light: Oct 2005
Second light: Jan 2008
Telescope mass: approx 650 metric tons
Telescope pier diameter: 14 meters (46 feet)
Building pier diameter: 23 meters (75.5 feet)
Mirror weight: approx 17.7 metric tons each
Mirror size: 8.408 meters (331 inches) each
Mirror center hole diameter: 0.889 meters (35 inches)
Mirror thickness at center hole: .437 meters (17.2 inches)
Mirror thickness at edge: .894 meters (35.2 inches)
Mirror aluminum coating thickness: 100 nanometers (0.000004 inches)
Secondary mirror diameter: .91 meters (36 inches)
LBT enclosure height: 51 meters (167 feet)
Observatory elevation: 3221 meters (10567 feet)
Number of LBTO employees: 50