Strata Safety Products’ Strata CommTrac recently received approval from the Mine Safety and Health Administration. It is a self-forming, node-to-node system with absolutely no cables, wires or external antennas. Fixed communication nodes installed underground and powered by four D-cell alkaline batteries communicate with miner-worn communicator and tracking devices to transmit data to the surface via wireless gateways. Data is monitored, tracked and logged on a secure server with a graphical user interface.  www.strataworldwide.com

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