The largest auger available on station is 48" diameter. However, the culvert is 58" outside diameter. So, the drillers drilled a ring of 24" auger holes, and then used the 48" auger to smash up the remaining ice in the center of the hole. We all worked with shovels to remove the large chunks of ice from the hole so that the culvert could be installed. For the finale, the drillers hoisted one end of the culvert into the air while those on the ground aligned it with the hole. The culvert was lowered into place using an iterative process to align it as vertically as possible.
With the culvert installed at the chosen position, the carpenters are now working to assemble our large bot house with its moon pool directly over the culvert. This will be our access, egress, and center of operations for ARTEMIS dives.
We entered the GPS coordinates into our geospatial information software, and were surprised by the measured hut alignment: 90.0 degrees - within a tenth of a degree of due East-West. It's just a coincidence, but it's fun. We don't really care what the alignment is, just as long as we know it, so that we can interpret the water current velocity directions that we're measuring in the hut.