A medium frequency wireless communication system for underground mines.
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, Contract H0308004, 1983 Jan; :1-323
An underground medium frequency radio communications system has been developed and demonstrated in both coal and metal/non metal mines. The principal advantage of the system are it s low cost, ease of installation and the ability to provide radio communications to any vehicle or roving miner in the underground mine. The system provides high quality radio coverage in work areas and along manways with existing "wireplant" conductors. The conductors include AC power cable, telephone cable, metal water and high pressure air pipes, etc. The measured communications range from the base station to mobile transceiver exceeded 12,500 ft without the use of repeaters. A cost/benefit analysis shows that the initial cost of the equipment can be returned 2-6 times in the first year. The mine productivity increases by approximately 13 percent.
Mining-industry; Mining-equipment; Underground-mining; Radio-waves; Metal-mining; Coal-mining
CP; Final Contract Report
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, Contract H0308004
A.R.F. Products, Inc.