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'Modified Longwall Mining with a German Coal Planer. Progress Report 2: Completion of Mining in three Adjacent Panels in the Pocahontas No. 4 Coal Bed, Helen, W. Va.'If this photograph is used for publication, please give credit to the Bureau of Mines, United States, Department of Interior.

1. Wood Crib with One Crib Release Tripped at Pocahontas No. 4 Coal Bed, Helen, W. Va.

'Modified Longwall Mining with a German Coal Planer. Progress Report 2: Completion of Mining in three Adjacent Panels in the Pocahontas No. 4 Coal Bed, Helen, W. Va.' If this photograph is used for publication, please give credit to the Bureau of Mines, United States, Department of Interior.

2. Wood Crib with Both Releases Tripped and Crib Collapsed at Pocahontas No. 4 Coal Bed, Helen, W. Va.