Un'immagine dai servizi trasmessi dalla Tv: un oscilloscopio porta in superficie suoni provenienti dal sottosuolo

In this frame grab from TV channel 24 Horas, Chile’s Mining Minister Laurence Golborne, left, smiles as an unidentified official listens with a medical oscilloscope to unknown sounds coming from the area of a collapsed mine where about 33 miners have been trapped for 17 days in Copiapo, Chile, Sunday, Aug. 22, 2010. The miners have been trapped below the surface since the main access collapsed on Aug. 5 due to tons of falling rock. The text at bottom reads in Spanish “Moment that it (a drill) reaches 688 meters. Miner indicates that ‘knocking is heard’.”

(AP Photo)