From The Chico ER
Workers are preparing to rebuild the damaged Lake Oroville spillway by blasting away what’s left of the old one.
In this video from the state Department of Water Resources, Kiewit blasted two areas on May 31 — the lower chute of the spillway, and then the edge of the cliff near the main spillway’s break. Several angles are included in the video, including one from a drone.
After the blasting, the rubble is hauled away.