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Presents various ways of cutting and placing timbers to secure the best results. (1600 w.) (Read before the Indiana Min. Inst.)
Presents various ways of cutting and placing timbers to secure the best results. (1600 w.) (Read before the Indiana Min. Inst.)
Mine timbering
Mines Min
Evans, David J. (Autor:in)
1900
Aufsatz (Zeitschrift)
Englisch
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Engineering Index Backfile | 1925
Engineering Index Backfile | 1901
|Engineering Index Backfile | 1925
Safe and efficient mine timbering
Engineering Index Backfile | 1919
|Engineering Index Backfile | 1895