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Title: Communications trends ease underground problems

Journal Article · · Coal Min. Process.; (United States)
OSTI ID:5039382

New developments in underground mine communications include improved twisted-pair paging phones, selective paging phones and annunciator systems, multi-channel systems with data transmission capabilities, and wireless medium frequency radio systems.

Research Organization:
Mine Saf Appl Co, Pittsburgh, Pa, USA
OSTI ID:
5039382
Journal Information:
Coal Min. Process.; (United States), Vol. 18:12
Country of Publication:
United States
Language:
English