>In order to do a controlled blast, crews need to drill into the hillside about 20 to 40 feet to put live charges into the hole. With the hillside moving, being able to drill accurately while also not causing more instability would be incredibly challenging. Even if the holes were drilled accurately, there’s the possibility that the charges won’t go off

with laser guidance and at $150K that would probably be more precise, safe and efficient tool for that job here - https://en.wikipedia.org/wiki/GBU-28

Btw, similar scale hillside slide in 2017 in Big Sur, Hwy 1 https://www.npr.org/sections/thetwo-way/2017/05/25/530025850...