Search alternatives:
"Coal mines and mining Pennsylvania." » "Coal lines and mining Pennsylvania." (Expand Search)
Showing 1 - 3 results of 3 for search '"Coal mines and mining Pennsylvania."', query time: 0.17s Refine Results
  1. 1
    Methods of determining the orientations of bedrock fracture systems in southwestern Pennsylvania and northern West Virginia /
    by Bench, B. M.
    Published 1977
    Subjects: “...Coal mines and mining Pennsylvania....”
    Get full text
    Government Document Book
  2. 2
    Selected geologic factors affecting mining of the Pittsburgh coalbed /
    Published 1975
    Subjects: “...Coal mines and mining Pennsylvania....”
    Get full text
    Government Document Book
  3. 3
    Methods of determining the orientations of bedrock fracture systems in southwestern Pennsylvania and northern West Virginia /
    Subjects: “...Coal mines and mining Pennsylvania....”
    Government Document Book
Search Tools: RSS Feed – Email Search