Search Results
- IDNO:
- 002747
- Title:
- Longwall Face Showing Armored Conveyor, Planer, and Roof Supports
- Description:
- 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; Please give credit to Bureau of Mines, United States, Department of Interior.
- IDNO:
- 004428
- Title:
- Tipple of C. C. B. Smokeless Coal Company No. 3 Mine at Helen, W. Va.
- Date:
- ca. 1920-1930
- Description:
- Tipple and Conveyor at C.C.B. Smokeless Coal Co., Helen, W. Va.