Dwight R. Crandell 1951 <p>In the past 5 years several landslides have originated in hillsides at Rapid City, South Dakota, with resulting damage both to city streets and to private dwellings. The present investigation is a contribution to the continuing study of landslides by the U. S. Geological Survey, although a formal project of landslide investigation in Rapid City has not been established.</p> application/pdf 10.3133/ofr5229 en U.S. Geological Survey Landslides in shale at Rapid City, South Dakota reports