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The nature of underground mines incorporates many long, narrow and intertwined tunnels, often in a higher risk environment, where communication with the elevator operators and general foremen for the site, are crucial.

SENAO INTERNATIONAL installs a system of interconnected repeaters that dynamically communicate with each other and the management system and antenna above ground, monitor the radio signals below ground and ensure optimal coverage. By attaching a small adapter to a regular cellular or cordless phone, the miners can use their phones to contact the outside world.

Emergency personnel can also utilize the technology in cases where they need to be at the scene of an incident below ground.

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