Communication, Tracking & Breathing Technology - National Mining ...
Communication, Tracking & Breathing Technology - National Mining ...
Communication, Tracking & Breathing Technology - National Mining ...
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Current Mine <strong>Communication</strong><br />
Devices<br />
• Telephones<br />
• Pager Phones (Loudspeaking Telephones)<br />
• Handheld 2-way 2<br />
radios<br />
• Leaky Feeder Systems<br />
Pittsburgh Research Laboratory