Modern excavations here have brought to light several historic sites, including the support wall of David's citadel (which is itself vanished) and Warren's Shaft, a portion of the pre-Davidic Canaanite water system.
There have been a number of excavations here recently.
However, ideally, longer than 16 months would allow retrofits to occur over a period of several years so that facility owners can properly plan outages and suppliers can properly plan for resource availability.