Modified Longwall Mining with a German Coal Planer
Identifier:
001786
Title:
Modified Longwall Mining with a German Coal Planer
Description:
Plan for modified longwall mining with a German coal planer. Text on back reads, 'Progress report 2: Completion of mining in three adjacent panels in the Pocahontas No. 4 coal bed, Helen, W. Va.' If picture is used for publication please give credit to the Bureau of Mines, U.S. Deptartment of Interior.
Subjects:
Coal mines and mining--West Virginia--Helen., Longwall mining., Coal Mines and Mining.
