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Use of a large-diameter auger in mining pitching anthracite beds

Use of a continuous borer in mining pitching anthracite beds

Published Year

• 1960-1969 (2) *

Subject

• Coal-mining machinery (2)
• Augers (1)
• Boring machinery (1)

Author

• Schimmel, J. T. (2) *
• Markle, Donald. (1)
• Tavenner, W. H. (1)
• Tavenner, William H. (1)

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