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A dissertation submitted to the Faculty of Science, University of the Witwatersrand, Johannesburg, in fulfilment of the requirements for the degree of Master of Science in Geophysics . / Rockbursts continue to be one of the more high profile and problematic worker hazards in the South African gold mining industry. Recent advances in the technology of seismic monitoring systems and seismic data analysis and interpretation methods hold considerable promise towards improving the success rate of rockburst control measures. This study tests different methods for the evaluation of the response of geological structures to mining induced stress changes. A small part of Western Holdings Gold Mine in the Welkom goldfield -- the Postma Area -- offers a challenge because of its geological complexity, accessibility and high incidence of seismicity. The sensitivity of the local network to ground motions in this area of interest and the expected spatial location accuracy is established and deemed adequate for a detailed investigation of seismic activity. The local mining geometry, geology and methods of mining are discussed. The fractured state of the rock mass observed in situ, close to the stope faces, is in agreement with the results of numerical elastic modelling and the high stresses inferred seismically. Almost immediately after the incidence of a large event (ML 3.7) which occurred close to one end of a dyke, an increased rate of seismic activity became apparent at another part of the same dyke, some 250 m to the east. A change in the state of seismic stress, before and after the large event, points to a transfer of stress along this geological discontinuity. A quantitative analysis of recorded seismicity indicates spatial and temporal variations in the state of stress and strain throughout the rock mass surrounding Mining excavations. The elastic stress modelling performed routinely by rock mechanics engineers in the deep gold mines is, by itself, incapable of catering for the rheological nature of the rock mass, but taken together with independent seismic evaluations of a fault orthogonal to a highly stressed dyke it is shown that both methods are mutually complementary and can enhance the assessment of the seismic instability of the structures. A back-analysis is conducted on ten large seismic events (ML 2.5) to identify precursors. These show that the timely recognition of high gradients in physical seismic parameters pertaining to strain rate and stress in time and space immediately prior to major seismic events is a real and practical possibility, as such constituting an early warning mechanism. The fore-warning of a large event is best served by an analysis of seismicity over the short term (weeks or days) through time-history variations and/or contouring of various seismic parameters, although long-term seismic responses (months or weeks) characterise specific patterns and trends which are useful in the forecast. / AC 2018

This thesis presents the findings of research into industrial and employment relations in the PNG mining industry, with particular reference to the Porgera gold mine. The thesis examines the challenges multinational mining companies go through in the formation and control of the workforces in PNG mines. Recruitment, training, localisation and industrial relations issues are discussed in relation to several mines, including Porgera. The discussion analyses two crucial concepts, 'pluralism' and 'exceptionalism' to draw attention to the fact that PNG's industrial relations system is 'pluralistic' in nature and approach; and therefore, 'exceptional' when compared to similar developing countries. Further, the thesis also analyses two theoretical models: general mode of industrialisation and state model. It assesses their applicability and relevance to PNG's human resource development and industrial relations system, particularly in the mining industry. The research draws on data gathered through long periods of fieldwork and observation of indigenous workers in PNG mines. It discusses entry to and adaptation to industrial work by Papua New Guinea tribes people. Particularly, the emergence of an industrial workforce at Porgera mine and its human resource implications are explored and discussed. One theme is the role of recruitment and training on 'greenfield' sites in the remote locations where the mines are situated. This includes the issues, concerns and dilemmas which multinational mining companies face in trying to balance the employment expectations and training requirements of both local inhabitants and the PNG government. Attention is paid to explaining how multinational mining companies have overcome such pressures by introducing ethnic affirmative action policies which favours the employment of local inhabitants. The roles of the PNG government, mining companies, trade unions and community groups are highlighted in the operation of industrial employment relations in the mines. The general aim of the thesis is to demonstrate the emergence and interplay of pluralistic institutions and the formation of an industrial workforce as a result of the mining company. / Doctor of Philosophy (PhD)

Progressive spatial segregation of Whites from other ethnic races in South Africa started in 1886. Apartheid rulers evicted three and a half million Blacks, Coloureds and Indians from white urban and residential areas between 1904 and 1994. Apartheid planners used natural, mining, industrial, and infrastructural buffer zones to spatially enforce segregation. They based their apartheid spatial governance on separation and control and not on urban development. Today remnants of apartheid remain deeply embedded in the urban framework, where large buffer zones continue to enforce segregation and disrupt economic growth. Victims of apartheid legislation believed the eradication of apartheid in 1994 meant the right to live in the city and the end of forced evictions. Since then the post-Apartheid government has conducted 2 million evictions, reminiscent of the 3.5 million evictions during the apartheid years. In an attempt to make Johannesburg a `world class city`, the municipality forcefully removed the poor from the city, and relocated them to rural locations where their livelihoods are severely challenged. To many, a new ``apartheid` has been born; one that segregates the rich and the poor. The government has released several strategies to provide land for the poor near the city, but the high cost of land in urban areas has disrupted implementation. The thesis proposes a three-fold strategic design intervention to provide land for the poor near the city and dissolve the apartheid-designed buffer zone between Soweto and Johannesburg. The site, a landmark from the apartheid spatial legacy and part of the Witwatersrand gold mining belt, separates Soweto, home to four million Blacks, from the city of Johannesburg. About one and a half million people commute to the city each day passing by the 14 km stretch of this toxic mining land. The thesis proposes three urban design strategies to transform the site into a community, which the local people would build: Remediation strategies to address the toxic mining landscape, infrastructural strategies to provide basic services and economic strategies to promote economic growth. These strategies operate in a codependent structure. Co-op centres implement these strategies, transfering strategy technologies to the local community.

Thesis (M.Econ. (Economics & Economic History)) - Rhodes University, 2009.

Thesis (Engineer of Mines)--University of Alaska. Thesis summarizes survey of geology, geography, access, gold analysis and type classification, and economic potential of development on the Seward Peninsula Mining Region, Bendeleben Quadrangle. / Alaska "Territorial Department of Mines reports" or "TDM reports" are a collection of reports, notes and maps written by Dept. employees working out of several field offices throughout the territory. Series titles and numbers within the collection were retrospectively assigned with the exception of the few written after statehood (1959). Preliminary leaf is a letter from the author dated "April 29, 1941." Plate I "Outline map of Seward Peninsula showing location of Taylor Region," 1:150,000, sheet unfolds to 22 x 30 cm.; plate II, "Topographic map of Taylor vicinity," 1:12,000, sheet unfolds to 39 x 41 cm.; plate III "Detail sketch Placer deposits in vicinity of Taylor, Seward Peninsula, Alaska," 1:4800, sheet unfolds to 34 x 68 cm.; plate IV Topography - Geology drainage of a part of the Upper Kougarok River," 1 inch = 1.6 miles, sheet unfolds to 68 x 59 cm.; plate V "Cross section sketch - Structure along lines A-B, C-D, E-F," scale varies, sheet unfolds to 38 x60 cm.; plate VI "Contour sketch map surface and bedrock," 1:9600, sheet unfolds to 39 x 41 cm.; and plate VII "Sections along lines shown on Plate II - Kougarok River Bench Placers," scale varies, sheet unfolds to 59 x 45 cm. Includes bibliographical references (leaf [29]). Also available in electronic format via Internet.

Thesis (MS)--University of Montana, 2009. / Contents viewed on January 15, 2010. Title from author supplied metadata.

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