No description available.

Thesis--University of Missouri, School of Mines and Metallurgy, 1903. / Year degree was granted determined from "1874-1999 MSM-UMR Alumni Directory". The entire thesis text is included in file. Holograph [Handwritten and illustrated in entirety by author]. Title from title screen of thesis/dissertation PDF file (viewed November 13, 2008)

Thesis (Professional Degree)--University of Missouri, School of Mines and Metallurgy, 1931. / The entire thesis text is included in file. Typescript. Illustrated by author. Title from title screen of thesis/dissertation PDF file (viewed May 21, 2010)

A dissertation Submitted to the Faculty of Science, University of the Witwatersrand, Johannesburg, for the degree of Master of Science. 12 July 2017. / The mapping of mines, both operational and abandoned, is a long, di cult and occasionally dangerous task especially in the latter case. Recent developments in active and passive consumer grade sensors, as well as quadcopter drones present the opportunity to automate these challenging tasks providing cost and safety bene ts. The goal of this research is to develop an autonomous vision-based mapping system that employs quadrotor drones to explore and map sections of mine tunnels. The system is equipped with inexpensive, structured light, depth cameras in place of traditional laser scanners, making the quadrotor setup more viable to produce in bulk. A modi ed version of Microsoft's Kinect Fusion algorithm is used to construct 3D point clouds in real-time as the agents traverse the scene. Finally, the generated and merged point clouds from the system are compared with those produced by current Lidar scanners. / LG2018

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No description available.

The mining industry is an important component of the Canadian economy. The principal waste material from this industry is tailings. Numerous failures of tailings dams have caused loss of life and serious pollution problems. This thesis relates to the broad scale investigation and development of improved methods for tailings disposal. A systematic morphology has been developed which provides an effective approach to the overall problem for long-term planning and design. Improved design and construction techniques are advanced for the hydraulic construction of tailings dams with mobile hydrocyclones. The new design incorporates a sealed structure to improve the structural quality and safety of the dam by reducing and maintaining the porewater pressure at zero or negative values over the long-term period. Significant economic benefits are also attainable with the new design techniques. Economic advantages and structural considerations are presented for the system to decant effluent from the tailings basin. Special instrumentation has been designed, developed, and tested which will facilitate the evaluation of the material shear strength for this specific type of tailings dam.

Thesis (M.S.)--Ohio University, June, 1986. / Title from PDF t.p.

Thesis (Ph. D.)--West Virginia University, 2009. / Title from document title page. Document formatted into pages; contains xvi, 149 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 138-149).

Uncontrolled recirculation of mine air is considered a hazard because it can result in excessive dust and objectionable gas levels. Smoke and gas from a mine fire can also be carried back into the fresh intake air. Recirculation is prohibited by most mining legislations and there is prejudice against its use. Recent experiments in Britain and South Africa have shown that recirculation of mine air can be safely implemented using suitable monitoring instruments. Controlled recirculation of air offers several advantages and shows potential for maintaining the quality of the mine air whilst also reducing heating and ventilation costs in many Canadian mines. The thesis reviews the work to date and outlines proposals for future applications of controlled recirculation in Canada. Particular problems of gas pollutants dilution, removal mechanisms and dust sedimentation and filtration are explained. A field survey at Sherritt Gordon Ruttan operation to study pollutant concentrations and trends is presented. Finally, monitoring and instrumentation requirements as well as economics of recirculation are examined. / Applied Science, Faculty of / Mining Engineering, Keevil Institute of / Graduate