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PONZONE (Alessandria) – Wooden poles driven every couple of meters into the ground and a metal net one and a half meters high, unrolled by hand one piece at a time. It is difficult to say, at this rate, how long it will take to complete the 130 kilometers of fence which, combined with the existing barrier created by the three motorways that run between Piedmont and Liguria, creates a perimeter of 260 kilometers to isolate the 114 municipalities affected by the disease plague