sentences:  The PEGASOS study, which cost around 10 million Swiss Francs (approximately $11 million) and which was conducted by 21 European experts with American involvement, concluded that the earthquake risk in Switzerland is twice as large as had been previously thought.In 2011, following the nuclear emergencies at Japan's Fukushima I Nuclear Power Plant and other nuclear facilities Swiss Federal Councillor Doris Leuthard announced on 14 March a freeze in the authorisation procedures for three new nuclear power plants (see "Politics"), and ordered a safety review of the country's existing plants.There was also concern in Switzerland over the seismic risks of the Fessenheim Nuclear Power Plant, located in France approximately from the Swiss border.