October 20, 2016 – The first LSST hardware integration between vendors took place today on Cerro Pachón, a major milestone! This image shows the lowering of a steel base plate for the dome azimuth track (from EIE in Italy) atop the concrete wall of the lower enclosure (from Besalco in Chile). This plate, the first of 16, weighs about one and a half tons and is lifted by crane over 50 feet in the air for installation. The plates and their anchor bolts will be installed and precisely aligned/level and then left for a curing period of 90 days. After that 3-month curing of the concrete, EIE will return to more precisely level and install grout under the base plates, which will provide the foundation for the continued integration of the dome azimuth track system.