LSST Summit Facility general contractor, Besalco, has officially taken possession of the Cerro Pachon site in order to begin the construction effort. Going forward, the LSST site now is an active construction site with all of the consequent safety rules and restrictions in effect. In particular, access to the site by project person now must be pre-approved by Besalco. The official handover document was signed by AURA and Besalco representatives on January 5. Since the handover, Besalco and Rocterra staff have received orientation and accreditation, and both parties’ administrative offices have mobilized to the summit. Physical movement of earth by excavation contractor Rocterra on the telescope platform begins today, January 16.