Norphonic VoIP Mining Telephones have been installed inside the Konkola Copper Mine (KCM), Zambia. Located in Chililabombwe, 455 miles north of Zambia’s capital Lusaka, KCM produce over 200,000 tonnes of copper every year. The metal is exported to China and other important Asian manufacturing regions. As part of a target aimed at doubling their output, KCM wanted to bring the copper quicker to surface by introducing a high-speed train line.

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