PRC 0.00% 61.0¢ pike river coal limited

http://www.miningweekly.com/article/engineering-firm-introduces-w...

  1. 81 Posts.
    http://www.miningweekly.com/article/engineering-firm-introduces-wifi-underground-system-2009-10-30
    dont know if links work on hc,but this device may have saved a bit of time
 
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