Results 41 - 43 of 43

• Update on the Continuing Functions of the Former US Bureau of Mines
  1/1/1997 - Peer reviewed journal articles
  In fiscal 1996, the US Congress directed that the US Bureau of Mines (USBM) be closed. This article provides a summary of the continuing functions, the agencies involved and the points of contact for each continuing function.
• Control and Monitoring Via Medium Frequency Techniques and Existing Mine Conductors
  7/1/1985 - Peer reviewed journal articles
  Medium frequency (MF) techniques have been successfully applied to the problem of radio voice communications in both coal and metal and nonmetal mines. MF techniques can also be applied to the areas of in-mine control and monitoring. Preliminary work in...
• Underground Mine Communications
  1/1/1978 - Peer reviewed journal articles
  Extensive analysis of mine-communications systems has identified specific areas, in particular the excessive times required to locate key personnel underground, the inadequacy of existing phone systems in terms of capacity and privacy and the inability ...