Drilling operation on the hillside to the south of the Lake Oroville flood control spillway, as holes are being drilled up to 30-feet deep for controlled blasting at the Butte County site. Photo taken April 24, 2017.
Drilling operation on the hillside to the south of the Lake Oroville flood control spillway, as holes are being drilled up to 30-feet deep for controlled blasting at the Butte County site. Photo taken April 24, 2017.
Drilling and grading operation on the hillside to the south of the Lake Oroville flood control spillway, as holes are being drilled up to 30-feet deep for controlled blasting at the Butte County site. Photo taken April 24, 2017.