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La NAGRA, la Società cooperativa nazionale per l'immagazzinamento delle scorie radioattive, ha dato il via lunedì alle prospezioni nell'Unterland zurighese, nei pressi di Bülach.
Andranno in particolare accertati lo spessore, la permeabilità e la composizione del sottosuolo, formato da rocce e argilla, nel quale potrebbe essere realizzato il deposito.
Entro il 2022 dovrebbero essere individuato il sito definitivo. Le misurazioni già compiute in passato hanno permesso di limitare a tre quelli geologicamente idonei: oltre a quello succitato, denominato Lägern Nord, ce n'è uno in Argovia (Giura Est) e uno a cavallo tra i cantoni di Turgovia e Zurigo (Zurigo Nord-Est).
ATS/dg
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