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Book cover of Modified Longwall Mining with a German Coal Planer

Modified Longwall Mining with a German Coal Planer

Progress Report 2. Completion of Mining in Three Adjacent Panels in the Pocahontas No. 4 Bed, Helen, W. Va

by Wilbur A. Haley, H. A. Quenon ยท 1954

ISBN:  Unavailable

Category: Unavailable

Page count: 13