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- 85600224 contributor B5081796.
- 85600224 created "1985.".
- 85600224 date "1985".
- 85600224 date "1985.".
- 85600224 dateCopyrighted "1985.".
- 85600224 description "Bibliography: p. 18-19.".
- 85600224 extent "ii, 19 p. :".
- 85600224 isPartOf "Report of investigations (United States. Bureau of Mines) ; 8996.".
- 85600224 isPartOf "Report of investigations / United States Department of the Interior, Bureau of Mines ; 8996".
- 85600224 issued "1985".
- 85600224 issued "1985.".
- 85600224 language "eng".
- 85600224 publisher "Pittsburgh, Pa. (P.O. Box 18070, Pittsburgh 15236) : U.S. Dept. of the Interior, Bureau of Mines,".
- 85600224 subject "622 s 622/.28 19".
- 85600224 subject "Gate roads (Mining)".
- 85600224 subject "Longwall mining.".
- 85600224 subject "Mine roof bolting.".
- 85600224 subject "Pillaring (Mining)".
- 85600224 subject "TN23 .U43 no. 8996 TN275".
- 85600224 title "The Effects of a retreating longwall on a three-entry gate road system / by Richard A. Allwes ... [et al.].".
- 85600224 type "text".