Richard F. Caris Mirror Lab
GMT Segment 1
Segment 1 was completed in 2012.
GMT Segment 2
As of June 2017, Segment 2 is undergoing front surface polishing.
GMT Segment 3
As of June 2017, Segment 3 has had its rear surface polished and load spreaders have been installed on the rear surface. The next stage will be processing the front of the mirror.
GMT Segment 4
As of June 2017, the next stage of Segment 4 is to polish the rear surface.