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1. Electromagnetic technique for locating boreholes

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   [PDF - 737.93 KB]

   Personal Author:

   Sacks, H. Kenneth.

   Corporate Authors:

   United States. Bureau of Mines.

   Published Date:

   1978

   Series:

   Report of investigations (United States. Bureau of Mines) ; 8302
   Report of investigations (United States. Bureau of Mines) ; 8308
   

   Description:

   "The Bureau of Mines has developed hardware for electromagnetic (EM) detection and location of miners trapped in underground coal mines. This report d...

   File Type:

   [PDF - 737.93 KB]

   File Type:

   [PDF - 737.93 KB]
2. Laser tracking and tram control of a continuous mining machine

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   [PDF - 1.80 MB]

   Personal Author:

   Anderson, Donna L.

   Corporate Authors:

   United States. Bureau of Mines.

   Published Date:

   1990

   Series:

   Report of investigations (United States. Bureau of Mines) ; 9319

   Description:

   "This U.S. Bureau of Mines report discusses the status of a laser- based guidance system to provide position and heading feedback and closed-loop cont...

   File Type:

   [PDF - 1.80 MB]

   File Type:

   [PDF - 1.80 MB]