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lance r barron
2 cilt bulundu.
Cilt sonuçları
Longwall gate road stability in a steeply pitching thick coal seam with a weak roof
Lance R. Barron · U.S. Dept. of the Interior, Bureau of Mines
33 sayfa · 1995
Longwall mining / Ground control (Mining) / Gate roads (Mining)
Longwall Gate Road Stability in Four Deep Western U.S. Coal Mines (Information Circular)
Lance R. Barron, Matthew J. Demarco, R. O. Kneisley · United States Dept of Interior
Sayfa sayısı yok · 1994
Ground control (Mining) / Longwall mining / Utah