Solutions The Nantou mine was built in a curved line, much like a ‘S’ , and at each bend, an enclave was built using gigantic caverns. These bends created blind spots and, consequently, further difficulties related to the project. In order to avoid signal loss, Ameritel installed switches every 100 meters for signal regeneration, assuring uninterrupted communications between the site surface and all parts of the tunnel. In phase one, Ameritel

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