Includes bibliographical references (leaves 88-92). / This study investigates the appropriateness of conservation controls in low-income communities. The imposition of development controls is a limitation on the private rights of individuals in the interest of the public good. This is essential in order to preserve heritage resources for future generations. However, questions arise around this practice when such limitations have a direct negative effect on the daily struggle for survival that many people face. Many poor people cannot bear the cost associated with maintenance and restoration of old buildings, and this puts many heritage resources at risk. Actors within bureaucracies also have their own goals to achieve, and this also influences the way that heritage is managed in low-income areas. The central research question of this study is: Are conservation controls in lowincome communities appropriate? This question was explored within the context of Mamre, a historical mission station approximately 50 km north of Cape Town. Firstly, several descriptive scenarios around which the research question could be explored were constructed, and this was followed by an investigation of the relevant literature. A contextual analysis of Mamre was also completed in order to gain an understanding of the character and functioning of the village. The case study then focused on two incidents where heritage-related building applications were made. Several instances where values conflict emerged from the study, and these enabled the researcher to draw some conclusions on conservation in low-income communities. The study found that the concept of significance is not well understood by officials, and its application differs widely. It was also clear that the law is often applied in a well-intended but incorrect, and in fact at times illegal, manner. This study also found that mechanisms of financial support should be available in certain cases. In order to ensure effective conservation of heritage resources, the correct legal mechanisms and strong policy must be in place. This must be based on a thorough assessment of significance and it is essential that this is done with a good understanding of the context.

The turn of this century has been characterised by a flurry of research activities taking place around the history of Mission stations and missionaries in South Africa (SA). In Venda, in the Limpopo Province of SA, research about the Berlin Missionary Society (BMS) also gained momentum. Most of the researchers working in the area relied mainly on diaries, letters, annual reports, and limited published materials written by the BMS missionaries who worked at various mission stations in the area. These researchers focused on historical, educational, and religious developments, as captured by the Berlin missionaries. Of these historical accounts, the voices of the local communities have been hushed. Most of the stories available in written sources are from the viewpoints of the missionaries. At the same time, the focus of researchers in the heritage conservation fields has been on the physical condition of heritage properties, where the intention was to arrest deterioration of material. While there is a change in thinking in the heritage field to take into consideration the involvement of relevant stakeholders, the focus is still on the challenges related to the physical condition of heritage properties. Researchers in the heritage field have come to realise that conservation cannot unify or advance with any real innovation or vision if there is a continuation to concentrate the bulk of conservation discourse on issues of physical condition. This study addresses the issue of community participation in research by responding to the following question: What is the impact of community attitudes and perspectives towards Georgenholtz Mission Station (GHMS) as a heritage resource? Various community groupings were given the responsibility of airing their views regarding the Mission station as a heritage resource. In doing so, they were able to identify and articulate the values they associate with the mission station. Without an understanding of these values, practitioners, managers, and communities would be unable to act in respect of the gradual but rapid deterioration of the same heritage resource. Because of these values, communities were able to recommend what actions would be to the benefit of all of them. The research question of this study is answered through one-on-one oral interviews the researcher conducted with respondents. These respondents are divided into four categories of communities namely the youth, Lutheran Church leadership, Ha-Luvhimbi community leaders and members of families with historic ties with the Berlin Missionary Society. Individual respondents from these community categories were asked to comment upon the history of the Berlin Missionary Society and the development of Georgenholtz Mission Station from 1877 to the present times. They were also asked to broadly identify and explain the heritage significance of Georgenholtz Mission Station. The last question they were asked relates to what communities would like to see happening with Georgenholtz moving forward. The responses that came from these respondents show that Georgenholtz Mission Station has extensive connections to Mission history in rural South Africa which assists in conveying the significance of this Mission station beyond its importance to Ha-Luvhimbi village. Communities could identify various values attached to the Mission station, including amongst others, historical, aesthetic and architectural, social and economic values that should be preserved for the benefit of current and future generations. The results from this study indicate that communities interviewed regard Georgenholtz Mission Station as their heritage resource that should be taken care of and that there are economic benefits that could be derived from the adaptive reuse of the Mission station. The study concludes by outlining recommendations for further and extended research on the subject by other researchers.

Bibliography: leaves 139-146. / The present study has focused on exploring the extent to which metal ion activation occurs and influences flotation and how this can be managed so as to increase the separation of pentlandite from pyroxene and feldspar. The aim was to minimise the percentage pyroxene and feldspar reporting to the concentrate and simultaneously maximise the pentlandite recovery. The possible chemical reactions taking place on surfaces of synthetic pentlandite, natural pyroxene and feldspar were investigated at pH 4, 6 and 9 in di-sodium tetra borate solution and in synthetic process water in the case of zeta potential determinations, microflotation and ToF-SIMS (time of flight secondary ion mass spectrometry) analyses and in synthetic process water in the case of batch flotation tests.

Includes bibliographical references (leaves 170-181). / The Platreef is located in the northern limb of the Bushveld Complex of South Africa. This reef consists of a complex assemblage of rock types, with pyroxenites, serpentinites and calcsilicates being the most abundant. The predominant PGMs are the tellurides, arsenides, alloys and sulphides. The Pt and Pd tellurides contribute between 20-45% of the PGMs present in the Platreef ore followed by the alloys (26%), arsenides (21%) and sulphides (19%). Flotation is used in the processing of the Platreef ore to separate the siliceous gangue from the platinum group minerals (PGM) and base metal sulphides. The PGE arsenide and telluride minerals are considered to be slow floating when compared to other PGMs as there is evidence of them reporting to the tailings.This thesis aimed to investigate the flotation behaviour of these minerals and presents results which characterise the surface properties of synthetic cooperite (PtS), vysotskite (PdS), sperrylite (PtAS2), palladoarsenide (Pd2As), moncheite (PtPd(BiTe)2 and PtTe2) and merenskyite (PdPt(BiTe)2 and PdTe2) and attempts to relate the flotation behaviour of the various minerals to these characteristics.

Includes bibliographical references. / This study examines the first identification and assignment of heritage values and significance undertaken by the “establishment”, the South African Heritage Resources Agency (SAHRA) and the City of Cape Town (CCT) in the Township of Langa in the Cape Province a decade ago. In brief, this is the story of Langa migrant labour hostels reviewed for its meaning as heritage to the diverse communities within Langa, compared with an earlier 2001/2 official evaluation by the state-led heritage management institutions. It is within a broader socio-political, cultural and heritage discourse context that this research project explores what the residents of Langa find significant. This is done with particular reference to the migrant labour hostel schemes since the intention was to establish to what extent conservation and heritage management is an appropriate response in an environment of material, economic and social difficulties; and, if so, to what degree the inhabitants of the hostels’ sense of value correspond to that articulated in the “official statement of significance” of 2004. This study questions the validity of nominating migrant labour hostels as “Grade I” national heritage resources.

Heritage sites, inclusive of cultural landscapes, are understood to derive their significance from perceptions of beauty, sense of place and, when it has been impacted by humans, its genius loci and tangible qualities and the overlay of their intangible associations. In order for a site to be recognized concurrence of an Authorised Heritage Discourse whose content is constructed by academics and professionally trained heritage experts and an Autochthonous Discourse defined and expressed by laypersons, occupying or having an association with the site or sites. When Ida's Valley Cultural Landscape underwent processes of identification and declaration (formal process) as a National Heritage Site in 2008 the assumption was that there was consensus between the two views, the Authorized Heritage Discourse and the Autochthonous Discourse. The hypothesis, then, in the case of Ida's Valley Cultural Landscape which lies just beyond the limits of the town, Stellenbosch, was that there was agreement between the AHD and the AD. The question that arose was whether the two readings of heritage value aligned and whether there really was agreement in terms of the significance of the site and the values it represented. This is found not to be the case. Concerns were raised regarding the manner in which the public participation process was handled, the content of the statement of significance around issues of identification, identity and, consequently, its impact on the idea of value. In addition, the issues of land for development, the locus of land ownership and the subsequent value and universal acceptance were placed under scrutiny and severely criticized by the local public and community groups. The conclusion was that there was no agreement between the two positions. The dissertation describes the exploration of these tensions.

Includes bibliographical references. / The primary purpose of this study is to determine the degree to which the historic built environment plays a role in the establishment of a Sense of Place in the South African context with its diverse population and complex political history. The underlying rationale for this focus is that a strong connection between a Sense of Place and the historic built environment has the potential to translate to a strong motivation for its preservation. The focus in this research is on a single case, a historic diamond mining town in the Free State Province of South Africa, dating to 1869, with a rich and diverse history. The research was conducted employing a multi-paradigmatic approach grounded in Phenomenology and Psychometrics.

The vibrant suburb of Fordsburg has a rich history of diverse working class communities. It has long been associated with the Indian community and more recently a new immigrant population from the Indian subcontinent. Transitory communities have left their mark on the suburb and have resulted in changing significances and heritage resources. The study's main aim was to identify what constants have gained significance to become anchors for memory and identity in Fordsburg's landscape of rapid urban and social change. An exploration of Fordsburg's history and evolution was undertaken so as to reflect on multiple interpretations and insights into unacknowledged histories of the area. Themes of identity, urban memory, hybridity and the everyday landscape were examined within the context of Fordsburg. It concluded that there are constants of cultural significance which anchor memory and identity. These constants are located in the ordinary urban landscape of public spaces created in Fordsburg's main roads, public amenities and Fordsburg Square.

Bibliography: leaves 123-127.

Includes abstract. / Includes bibliographical references. / The case studies that make up this thesis cover the three largest academic development programmes at the University of Cape Town. A variety of statistical methods are used to estimate the effect of educational interventions in selected first- and second-year academic development courses on the academic performance of academic development students in these courses and through to graduation, relative to mainstream students. In general, research in this area in South Africa and internationally has been characterised by small sample sizes and a lack of statistical rigour. Few studies control for the range of independent variables that can affect students’ academic performance, in addition to the academic development programme or course, and the great majority ignore the sampleselection problem that arises in the selection of students for academic development and mainstream programmes. The theoretical rationale underpinning this thesis is informed by the postpositivist and evidence-based approaches to empirical investigation. Demographic, academic and other data for some 9000 students for the years 1999?2005 was obtained from the university’s data base and academic departments. Statistical techniques including multivariate analysis and propensity score matching are used in an attempt to finesse the problems associated with the use of non-experimental data as students are selected into different courses and programmes.