Mining Publication: Mine Communications: An Overview of the Bureau of Mines Communications Research
Since 1969, the Department of Interior, Bureau of Mines, has carried out communications research. Research has been directed toward developing emergency and nonemergency mine communications. This paper gives an overview of the progress made in the last two years. Particular emphasis is given to the overall program, noise and signal measurements, systems studies , guidelines, products, and demonstrations now being carried on in operating mines.