Caltrans Drill Rig, Mill Creek
By Landslide Hazards Program
1997 (approx.)
![Caltrans drill rig installing subsurface extensometers and pore-water pressure sensors in the Mill Creek landslide.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/drill_0.jpg?itok=7JIw5tQ9)
Detailed Description
Photo 6: Caltrans drill rig installing subsurface extensometers (to measure landslide movement) and pore-water pressure sensors (to measure ground-water conditions) in the Mill Creek landslide.
Sources/Usage
Public Domain.