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Showing 1 - 12 results of 12 for search '"Mining research contract report."', query time: 0.34s Refine Results
  1. 1
    Microwave detection of lost wells and unknown water-filled voids in coal mines.
    Published 1984
    “...Mining research contract report....”
    Government Document Book
  2. 2
    Design, fabrication, and testing of a bidirectional auger.
    by Jack, O. Llewellyn
    Published 1983
    “...Mining research contract report....”
    Government Document Microform Book
  3. 3
    Evaluation of rotating water seal for frictional ignition spray system on a wet-head continuous miner /
    by Kost, John
    Published 1989
    “...Mining research contract report....”
    Government Document Microform Book
  4. 4
    Back injuries in underground coal mining.
    by Stobbe, Terrence J.
    Published 1989
    “...Mining research contract report....”
    Government Document Microform Book
  5. 5
    Long-term removal and retention of iron and manganese from acidic mine drainage by wetlands.
    Published 1990
    “...Mining research contract report....”
    Government Document Microform Book
  6. 6
    Development of an inexpensive pneumatic pipefeeder.
    Published 1990
    “...Mining research contract report....”
    Government Document Book
  7. 7
    Evaluation of phosphate sources for control of acid production in coal overburden.
    Published 1990
    “...Mining research contract report....”
    Government Document Book
  8. 8
    Above-ground demonstration of pneumatic stowing technologies.
    Published 1990
    “...Mining research contract report....”
    Government Document Book
  9. 9
    Accelerated pyrite oxidation/enhanced alkalinity couple to reduce acid mine drainage.
    Published 1991
    “...Mining research contract report....”
    Government Document Book
  10. 10
    Development of a dry exhaust conditioner for diesel engines.
    Published 1988
    “...Mining research contract report....”
    Government Document Book
  11. 11
    Improved method for extinguishing coal refuse fires.
    by Gross, S. S.
    Published 1991
    “...Mining research contract report....”
    Government Document Microform Book
  12. 12
    Blasting for abandoned mine land reclamation : closure of individual subsidence features and erratic, undocumented underground coal mine workings.
    Published 1991
    “...Mining research contract report....”
    Government Document Book
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