Overview of site as freeze pipes are being installed.
Force Main Receiving Shaft
(Microtunnel entry shaft)
Overview of site as freeze pipes are being installed.
Overview of shaft shortly after freeze-down commenced.
Overview of freeze plants and manifold system.
Top view of shaft during excavation using a "core barrel" drill method
for drilling the entire 13-ft. diameter at once.
Top view of shaft, walls covered with insulation and shaft ready for microtunnel
machine preparation.