Risultati: 1-120 di 2186035
Boyd, William Thomas
International symposium on Underground mining methods and technology <1986
Symposium on environmental engineering in coal mining <1972
Symposium on Underground mining equipment maintenance <1973
Symposium on Australian black coal: its occurrence, mining, preparation and use <1975
International conference on the reclamation treatment and utilization of coal mining wastes <2. ; 1987
International Conference on stability in underground mining <1. ; 1982
Dare, Wilbert Leland
Rolston, Jessica Smith
International conference on Stability in underground mining <2. ; 1984
Stati Uniti d'America : Bureau of mines
Shields, Joseph John
International symposium on rock bolting <1983
Congres Geologique International <12. ; 1913
Fieldner, Arno Carl <1881-1966>
International conference Mineral processing and extractive metallurgy <1984
National research council <Stati Uniti d'America> : Committee on chemical utilization of coal
National research council <Stati Uniti d'America> : Committee on chemical utilization of coal
National research council <Stati Uniti d'America> : Committee on chemical utilization of coal
Conference on operating systems <1982
AIME world symposium on mining and metallurgy of lead and zinc <1970
Malmquist, Carl P.
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