Directions:

Kragerø is the location of the Tangen Mine, the source of alvite mineral which whose chemical analysis provided the discovery of hafnium.
Driving south on freeway E18, exit west on highway 38 at intersection "1" - N58 55.75 E9 19.02.
Intersection of highways 38 and 363 at "2" - N58 54.02 E9 19.06.
Turn south from highway 363 onto highway 38 at "3" - N58 53.40 E9 21.47.