Thesis (B.S.)--University of Missouri, School of Mines and Metallurgy, 1905. / The entire thesis text is included in file. Typescript. Title from title screen of thesis/dissertation PDF file (viewed October 31, 2008)

Thesis (M.S.)--University of Missouri, School of Mines and Metallurgy, 1928. / The entire thesis text is included in file. Typescript. Title from title screen of thesis/dissertation PDF file (viewed December 15, 2009) Includes bibliographical references (p. 92).

Thesis (Professional Degree)--University of Missouri, School of Mines and Metallurgy, 1927. / The entire thesis text is included in file. Typescript. Title from title screen of thesis/dissertation PDF file (viewed October 29, 2009) Includes bibliographical references (p. [85-87]) and index (p. [88]).

Thesis (M.S.)--Miami University, Dept. of Geology, 2002. / Title from first page of PDF document. Document formatted into pages; contains vi, 182 p. : ill. Includes bibliographical references (p. 128-130).

M.Tech. (Engineering: Chemical) / South Africa has the second largest fluorspar reserves in the world, but about 95% of the mined fluorspar is exported without local beneficiation that would otherwise increase foreign exchange earnings., Creamer Mining Weekly G-Other Trade Topic- Investment, (2005). The first step of a possible local beneficiation process would be the feeding of fluorspar solid from a hopper fitted with a screw feeder, using nitrogen gas to transport the powder into a non-transfer plasma reactor system. This study had as a main goal the optimization of the applicable continuous feeding parameters. The objectives of the investigation were: (a) Evaluation of the feeding system. (b) Evaluation of pumping/vacuum generation requirements. (c) Evaluation of the effect of using solid powder with non - uniform particle size. (d) To develop a model to enable the design and preliminary costing of a fullscale plant. Tests were performed in a test rig constructed for this purpose using different pipe diameters and nitrogen flow rates for the transport of the powder. It was found that the level in the hopper would have to be kept constant or a control system would have to be implemented in order to maintain a constant powder feed rate. In addition, a model was developed for the transport of the powder, and was used to optimize the pipe diameter required. An initial estimate of the operating cost and earnings of a possible full scale plant indicated that the beneficiation process would be very profitable. It is therefore suggested that this process be investigated further for conditions closer to the optimum modelled in a mini-pilot plant operation that includes the plasma reactor system in preparation of full scale implementation

Thesis (M.S.)--University of Missouri, School of Mines and Metallurgy, 1929. / Page number 23 is repeated twice in the paging. The entire thesis text is included in file. Typescript. Illustrated by author. Title from title screen of thesis/dissertation PDF file (viewed Dec. 11, 2009). Includes bibliographical references (p. 35).

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Thesis--University of Missouri, School of Mines and Metallurgy, 1915. / The entire thesis text is included in file. Typescript. Illustrated by author. Title from title screen of thesis/dissertation PDF file (viewed April 23, 2009) Includes bibliographical references (p. 27).

Thesis (M.Sc.(Hons))--University of Wollongong, 2002. / Typescript. Bibliographical references: leaf 113-122.

Thesis (B.S.)--University of Missouri, School of Mines and Metallurgy, 1933. / The entire thesis text is included in file. Typescript. Title from title screen of thesis/dissertation PDF file (viewed July 12, 2010) Includes bibliographical references (p. 26).