Frøydis Meen Wærsted impressed both the judges and the audience when she explained in a simple way why the tunnel construction in areas with alun shale is so problematic.
-Alum shale is a known problem that construction industry and authorities are concerned with, and I hope my research can help to better understand this problem, says Frøydis.
Alum shale contains a variety of toxins including radionuclides, and under suitable conditions can cause problems for the environment.
Alum shale disposal site, Gran
Photo
Frøydis Meen Wærsted
