Posiva
Posiva Oy is a Finnish company with headquarters in the municipality of Eurajoki, Finland. It was founded in 1995 by Teollisuuden Voima and Fortum, two Finnish nuclear plant operators, for researching and creating a method of final disposal of spent nuclear fuel from their plants.
For this purpose, Posiva is currently constructing the Onkalo [spent nuclear fuel repository], the world's first deep geological repository, at the Olkiluoto Nuclear Power Plant site.