Global ETD Search

41	A detailed sequential extraction study of selenium in coal and coal-associated strata from a coal mine in West Virginia Roy, Mimi. January 2005 (has links) Thesis (M.S.)--West Virginia University, 2005. / Title from document title page. Document formatted into pages; contains x, 93 p. : ill. (some col.), map (part col.). Vita. Includes abstract. Includes bibliographical references (p. 75-78). Selenium ores. Coal mines and mining
42	Die strukturveranderung des deutschen kohlenmarktes seit 1910 Fedák, Stephan von, January 1932 (has links) Inaug.-diss.--Halle-Wittenberg. / "Literaturverzeichnis":p.[6]-8. Coal trade Coal mines and mining
43	Der kohlenbedarf des staates und seine deckung Koerper, Willy, January 1913 (has links) Inaug.-diss.--Heidelberg. / Curriculum vitae. "Literatur": p. [7]-8. Coal trade Coal mines and mining
44	Documenting reclamation and closure of Ermelo coal mines implications for national strategy for mine reclamation in South Africa / Tshivhandekano, Aubrey Ndinannyi. January 2004 (has links) Thesis (M.A.)(Geography)--University of Pretoria, 2004. / Title from opening screen (viewed on 12 December 2005). Includes bibliographical references.
45	Die Verhältnisse des Kohlenbergbaues in den Vereinigten Staaten mit besonderer Bezugnahme auf die Lage der Bergarbeiters seit dem Jahre 1885 George, John Edward, January 1899 (has links) Inaug.-Diss.--Halle. / Vita. Includes bibliographical references. Coal mines and mining Coal miners
46	Living with the legacy of coal a study of Appalachian women's perceptions of the coal industry / Runser-Turner, Caroline M. January 2005 (has links) Thesis (M.A.)--Ohio University, August, 2005. / Title from PDF t.p. Includes bibliographical references (p. 100-108) Coal mines and mining Women Women
47	Die optimale benutting van Suid-Afrikaanse uitskotsteenkool Grobbelaar, Christiaan Johannes 26 May 2014 (has links) M.Phil. ( Energy Studies) / Please refer to full text to view abstract Coal mines and mining - South Africa
48	Geological controls for coal exploration and mining Noppé , Mark Adrian January 1992 (has links) The identification and interpretation of geological features is essential for the planning and ultimate success of any mining venture. Examples of geological features significant for mining are presented, and their identification during exploration discussed. In particular, the importance of coal qualities, seam thickness and seam elevation are emphasised in relation to longwall mining. Geostatistical analysis provides a powerful tool for improving the prediction and decision-making capabilities of both exploration and mine geologists. The availability of geostatistics, and the benefits resulting from its application, are demonstrated using actual data for calorific value, seam thickness and seam elevation. Contamination of run-of-mine coal is a common problem on highly-mechanised collieries. The problem generally arises from over-cutting of the designated mining horizon. A practical system for monitoring and controlling contamination on a mechanised bord-and-pillar and longwall colliery is presented. The results and benefits of applying such a system are cited for an actual longwall colliery. Numerical geological predictions are not always reported in terms of the reliability of such estimates. Many of these values can be reported in terms of confidence limits, particularly for routine grade control purposes. The methods and benefits of such reporting are described and illustrated by way of examples for calorific value and contamination levels. Coal -- Geology Coal mines and mining
49	The mining of South African thick coal seams: rock mechanics and mining considerations Galvin, James Maurice 16 March 2015 (has links) No description available. Coal mines and mining--South Africa
50	The history of English coal mining, 1500-1700 Moller, Asta Winifred Russell January 1933 (has links) No description available. 900 Coal mines and mining--England--History

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