Hazards
March 13, 2013
The Science of Sinkholes
This video, from the U.S. Geological Survey, explores the geological factors behind sinkholes and the related science. Narrated by Randall…
Hazards
March 13, 2013
This video, from the U.S. Geological Survey, explores the geological factors behind sinkholes and the related science. Narrated by Randall…
Hazards
June 15, 2011
This video, produced by the CGS in 2011, examines the significant geo-hazards related to the long history of underground coal…