Detail shots from the last month - progress update - CASE has left the lot, next crew was in digging up the place before the last CASE crane was even fully disassembled.
These pipes are used when pouring concrete into a water filled hole, they prevent the concrete from mixing (too much) with the slurry that is helping hold the walls apart.
Cleaning - always cleaning
Putting on the O rings.
The holding strap - runs in the groove seen above and keeps the pipes together.