DWR video drone screen capture, after all of the drilling rigs are gone. DWR has hidden the activity on the main spillway by not revealing any footage or gallery pictures. However, there is "residual" evidence of their investigation work. The array of large white spots reveal areas of core/drill sampling of the substructure rock under the concrete. If this dense pattern sequence holds all of the way to the gates, there would be up to 100 core/drillings performed. Juan Browne's earlier distance photos (and a partial capture from a DWR drone "reveal") identified FOUR drilling rigs on the spillway days back. The whitish plastic boxes were for core sample storage. These boxes were seen distributed over much of the spillway, even to the gates. This is the reason why there hasn't been any pictures. If these pictures were available, it could provoke more scrutiny from the forums and from the intrigue of the "keeping information suppressed".
Another point of interest - Notice the "terracing" of the hillside next to the left side of the spillway. This is new. When the spillway is in operation again, there may be sign of water seepage in this hillside. Another interesting point is that the elevation of where the group workers are standing, it shows no "bedrock". This elevation shows "rock" to the right of the eroded part of the spillway, yet no "rock" at/near the same elevation to the left (where the group of workers are standing). The "fill" material may be covering up the rock, but I would expect some irregularity of the surface as busting this rock would take more than a dozer. It could infer that the "rock" boundary drops in elevation on the left side of the spillway. Could be why this side slumped and partially pulled in the earlier failure (due to less stable region of the hillside via a rock depth boundary - erodible material closer to surface taken away by all of the "escaping" underflow water).
Evidence of numerous core/drilling on Spillway - See large White spots on concrete - plus new sidewall terracing
