@article{32653,
      recid = {32653},
      author = {Hakes, G.},
      title = {Remote operator coal mine roof bolter concepts utilizing  existing techniques and components : final report /},
      publisher = {Ingersoll-Rand Research,},
      address = {Princeton, N.J. :},
      pages = {167 p. :},
      year = {1978},
      note = {Cover title.},
      url = {http://library.usi.edu/record/32653},
}