Bs. As .: General views of journalist Julio Lagos putting on a life preserver. Close-ups of a cash of the Naval Prefecture Argentina manning a boat. General views of the water swirls produced by the propellers of the boat. Short close-ups taken from the moving boat where you can see the entrance to the Riachuelo and the old bridge and ferry Nicolás Avellaneda. General views of the dredge 310C working on the access channel to the Rio de la Plata. Report to the Head of Dredging of the Río de la Plata, engineer Horacio Petralli, in which he is asked: - Engineer, what is that we are seeing? (Answer: This is the dredger's trepan.) It is the element that is used for once lowered to a suitable depth cut the bottom material and with a suction pipe that is under the trepano sends it through the dredger and by pipe to the bank, that is, away from the channel we are cutting) - Can you explain how the dredger works? (Without sound / Julio Lagos)
Date: 9/21/1967
Duration: 2 minutes 21 seconds
Film code: B-01128

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