THROUGH-THE-EARTH (TTE) COMMUNICATIONS SYSTEM AND THE IN-MINE POWER LINE (IMPL) COMMUNICATIONS SYSTEM Page: 3 of 8
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Work has progressed on both subsystems: the Through-the-
Earth (TTE) Communications system and the In-Mine Power Line
(IMPL) Communications system.
The TTE system: The system was fabricated and repackaged
as an industrial product enclosed in a commercial rugged, waterproof
housing suitable for installation in mines. Features were added to the
system to appeal to the preferences of different mine managers.
Arrangements were made with NIOSH to install the system in the
Lake Lynn underground mine for evaluation and demonstration to
The IMPL system: Voice compression was successfully
implemented and incorporated into the laboratory model.
Compressed voice was transmitted through a power line, expanded
at the receiving end, and received with high clarity.
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Meiksin, Zvi H. THROUGH-THE-EARTH (TTE) COMMUNICATIONS SYSTEM AND THE IN-MINE POWER LINE (IMPL) COMMUNICATIONS SYSTEM, report, January 1, 2002; Pittsburgh, Pennsylvania. (digital.library.unt.edu/ark:/67531/metadc717349/m1/3/: accessed June 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.