This study examines the nature of the relationship which exists between mining sector production and development of the financial systems in South Africa. This is particularly important in that the mining sector is considered to be one of the major contributors to the country’s overall economic growth. South Africa is also considered to have a very well developed financial system, to the point where the dominance of one over the other is difficult to identify. Therefore offering insight into the nature of this relationship will assist policy makers in identifying the most effective policies in order to ensure that the developments within the financial systems impact appropriately on the mining sector, and ultimately on the economy. In addition to using the conventional proxies of financial system development, this study utilises the principal component analysis (PCA) to construct an index for the entire financial system. The multivariate cointegration approach as proposed by Johansen (1988) and Johansen and Juselius (1990) was then used to estimate the relationship between the development of the financial systems and the mining sector production for the period 1988-2008. The study reveals mixed results for different measures of financial system development. Those involving the banking system show that a negative relationship exists between total mining production and total credit extended to the private sector, while liquid liabilities has a positive relationship. Similarly, with the stock market system, mixed results are also obtained which reveal a negative relationship between total mining production and stock market capitalisation, while a positive relationship is found with secondary market turnover. Of all the financial system variables, only that of stock market capitalisation was found to be significant. The result with the financial development index reveals that a significant negative relationship exists between financial system development and total mining sector production. Results on the other variables controlled in the estimation show that positive and significant relationships exist between total mining production and both nominal exchange rate and political stability respectively. Increased mining production therefore takes place in periods of appreciating exchange rates, and similarly in the post-apartheid era. On the other hand, negative relationships were found for both trade openness and inflation control variables. The impulse response and variance decomposition analyses showed that total mining production explains the largest amount of shocks within itself. Overall, the study reveals that the mining sector might not have benefited much from the development in the South African financial system.

The scope of this work has been limited to a discussion of employer-employee relationships in the field of metal mining and does not include consideration of labour problems in connection with the production of coal, non-metallic ores, or structural materials. The Introductory part deals with the early history of gold, mining and the subsequent discovery and development of the base-metal resources of the province. In this connection, a study is made of the geographical distribution and extent of these natural resources. A series of charts indicate* the locations of the major producing areas within British Columbia. The expansion of the industry through the years is now considered and developments are traced leading to the present scale of operations. Comparative graphs are presented indicating production scales, average price movements and employment statistics with regard to each of the major metals produced in the province. Attention is now directed to the development of trade unionism in the industry. This deals with the early history of the Western Federation of Miners and the later growth of the International Union of Mine, Mill and Smelter Workers, which now represents organized labour in the metal mines. The role of government in labour relations is shown to be an important factor. A study is made of the effects of such legislative enactments, as, the Industrial Disputes investigation Act, the Wartime. Labour Relations Regulations Act (P.O.1003), and the Industrial Conciliation and Arbitration Act of British Columbia. Under the provisions of the last-mentioned act, which provides definite procedures for collective bargaining, some eighteen agreements are now in effect. Two of these actual agreements between the union and major producers have been made the subject for special study in the presentation of this phase of the subject. The strike record of the industry is now dealt with and the account of events leading up to the strike of 1946 among the gold producers is presented as being illustrative of the procedures followed. The present impasse of 1948 involving the same producers is shown to be an aftermath of the 1946 dispute. The discussion is concluded with an appraisal of present working conditions obtaining in the industry and current trends and indications are considered which would appear to have a bearing on future employer-employee relationships and the general welfare of the labour force, in the metal-mining industry. / Arts, Faculty of / Vancouver School of Economics / Graduate

M.Sc. (Zoology) / Pans are endorheic wetlands, and are abundant in South Africa in a band from the western Free State into Mpumalanga. The pan environment experiences daily and seasonal fluctuations in physico-chemical conditions. The physico-chemical variables are influenced by the local climatological and hydrological conditions, and are all inter-related. An imbalance of one variable can have countless effects on the others. The physico-chemical composition of the water ultimately determines the existence of the biota in such wetlands. Branchiopod crustaceans are a unique group of fauna which have various morphological, physiological and behavioural adaptations which enable them to survive in these variable environments. One such adaptation is the production of dormant egg banks. These eggs reside within the sediment through the dry phase and hatch during a following wet phase when conditions are favourable. Due to the endorheic nature of pans they are more vulnerable to anthropogenic stress. Anthropogenic activities are having profound effects on the integrity of these ecosystems. Agricultural and mining activities have some of the largest influences. The impacts that the following activities have include: the over utilisation of water, decreased periods of inundation, erosion and sedimentation, effluent discharge and direct habitat destruction. Many wetlands as a result are experiencing a rapid loss in biodiversity. Mining activities are on the increase especially in the Highveld region of southern Africa. Many of these wetlands are already (and will be in the future) affected by mining activities, making the effect of acid mine drainage (AMD) on the biota a priority concern. In conjunction with the uniqueness and vulnerability of pan ecosystems it is necessary to find new ways of monitoring such environmental impacts in the shortest time possible with minimal efforts, for the benefit of both the environment and researchers involved. This study therefore aimed to assess the diversity of branchiopod crustaceans hatching from egg banks of selected pans and obtain a reference community structure. It also aimed to assess the impacts AMD could have on the hatching success of branchiopods from these egg banks with the objective to determine whether these egg banks are still viable after exposure. To achieve the stated aims and objectives, sediment samples were collected from selected pans in mining regions of the country. Regions selected included Chrissiesmeer in the Mpumalanga province, Wesselsbron in the Free State province and Delareyville in the North West province. The sediment was used for hatching experiments in the laboratory. Pan sediment was exposed to three different treatments which included two salt solutions (1000 mg/l and 1500 mg/l respectively) and AMD. The salt solutions served as controls while the AMD served as an exposure. The number of nauplii hatching was counted in the controls and compared to the number of nauplii hatching in the AMD. The diversity of nauplii was also assessed and compared between controls and the AMD. The recovery potential of eggs exposed to AMD was also assessed by exposing the sediment treated with AMD to distilled water after its removal to get a better understanding on the effects of AMD at the community level. Results from the control treatments indicated that most pans have a range of taxa hatching that follow patterns of pan succession. Between the 1000 mg/l and 1500 mg/l controls there was no treatment that proved superior to the other. Representatives of all four orders of branchiopoda hatched from the experiments. The North West and Free State pans were the most diverse and had had the greatest abundances of individuals hatching. Spatially all three provinces differed in the diversity of individuals hatching from pans, as there were distinct differences in the taxonomic compositions. Although taxonomic composition of pans grouped together per province, pans from just a single province were largely dissimilar. Results from the AMD treatments indicated that AMD has a negative effect on the hatching ability of branchiopod crustacean eggs. Eggs that were initially exposed to AMD were unable to hatch in its presence. The recovery experiments indicated that recovery after exposure is limited as recovery only occurred in a few pans. The taxonomic composition of nauplii in the pans where recovery took place was altered and less diverse than the taxonomic composition found in the respective control treatments. Overall it was found that hatching experiments can be used as a monitoring tool in lieu of field sampling. Hatching experiments showed that AMD is detrimental to the branchiopod egg banks, inhibiting the ability of eggs to hatch in its presence. Recovery can take place but the recovery potential is low. Since the recovery potential of the egg banks is low, pans which are affected by AMD could experience extinction of the entire branchiopod community in years to come. As branchiopod communities are unique among pans, and serve as an important food source for many aquatic bird species, their extinction will bring about further losses in biodiversity.

The South African mining industry has not been shielded from the criminal threat the country faces. In this case study, the nature and extent of asset theft at one of the largest mining companies in South Africa is analysed. The crime prevention strategy adopted by the mine to curb asset theft was studied over a period of five years. This involved a survey of the views of the security managers on the effectiveness of the strategy implemented by the mine. Against the background of the South African Government’s broad description of the crime prevention approach adopted by the country, the researcher explored whether it would be practicable to implement an integrated crime prevention strategy – encompassing situational, social and law enforcement crime prevention approaches on primary, secondary and tertiary level – at the participating mine in order to curb asset theft. / Police Practice / M. Tech. (Policing)

MESMEG / Department of Mining and Environmental Geology / See the attached abstract below

MENVSC (Geography) / Department of Geography and Geo-Information Science / Artisanal and small-scale gold mining (ASGM) has devastating impacts on different parts of the environment and is a source of environmental degradation and contamination. ASGM degrades water resources, contaminate soil, sediments and water and lead to serious land degradation problems. ASGM activities are also associated with socio-economic issues such as child labour, prostitution and health and safety concerns. Insufficient understanding of the environmental and social problems of ASGM in Giyani Greenstone Belt has led to lack of mitigation strategies to reduce such problems. The main aim of this research was to assess and manage the environmental and socio-economic impacts of ASGM in Giyani Greenstone Belt. Remote sensing and GIS and Normalised Differential Vegetation Index were used to assess the effects of mining activities on vegetation cover. Assessment of the effects of ASGM on water, sediments and soil quality involved collection of samples in order to establish their physical and chemical properties. The concentration of toxic and trace metals were determined using Atomic Absorption Spectrometer (AAS) and X-ray Fluorescence (XRF) instruments. The pH meter was used to determine the pH level of the collected samples. Questionnaires, interviews and SPSS were used to assess socio-economic impacts of ASGM. The study culminated in devolvement of NDVI maps and this was used to assess the effects of ASGM on vegetation cover. Results showed that the mining activities in the area had caused extensive environmental degradation due to serious removal of vegetation cover in the site. ASGM had serious effects on soil, water and sediments quality such as environmental contamination by toxic and trace elements. Soil samples were found with high concentration of As, Cr, Cu, Ni, Pb and Zn as compared to the recommended South African Soil Quality and WHO threshold values for plants. It was found that Klein Letaba had high concentration of Ba, La, V, and Ce above the World Soil Averages for plants. Sediments were heavily contaminated with Cr, Ni, Pb, Zn, As and Ba as compared to the recommended standards prescribed by US EPA and WHO. The pH of water, soil and sediments samples collected from both mining sites were found to be strongly alkaline which affects the plants growth as well as aquatic flora and fauna. Socio-economic issues such as child labour, injuries, educational problems, health and safety issues, police disturbance, creation of jobs and income generation were identified at mine sites. ASGM had serious effect on vegetation cover through environmental degradation. ASGM also had serious environmental contamination by toxic and trace elements. ASGM had both positive and negative socio-economic issues at mining site which include employment opportunities, income generation, occupational health and safety, police disturbance and arrests and the use of child labour. Mine site rehabilitation is recommended in this study to reduce environmental degradation. The remediation of contaminated area by concentrated toxic and trace elements should be applied at both mining sites. ASGM should be legalised to enhance positive aspects of the mining such as increase in income generation and creation of more employment opportunities. However, there should be enforcement of mining policies to reduce social and environmental problems.

MESMEG / Department of Mining and Environmental Geology / The increase in the demand and market price of gold has led to reprocessing of gold tailings in many parts of the world. Mines are recently closing down due to depletion of resources and increasing mining costs leading to the reprocessing of old tailings dams. The cost of rehabilitation is high, and therefore a more convenient way of rehabilitation is required. The most convenient strategy identified here was to reprocess tailings for gold and use waste rocks as construction materials. The tailings residues (waste remaining after reprocessing) will be relocated to a more convenient place to avoid pollution. Gold reprocessing from tailings dams has gained momentum in South Africa especially in the Witwatersrand Basin where there are large volumes of tailings. Gold is being reprocessed from tailings in this area using hydraulic monitors. This study focused on the evaluation of gold and heavy metals within the tailings at Consolidated Murchison Mine tailings in Gravelotte, Limpopo province. Augering was conducted over the tailings up to a depth of 8 m along four sampling Profiles. The first profile had two sampling points, the second profile with three sampling points, the third and fourth profiles consisted of four and five sampling points respectively. Samples were collected at 1 m interval, therefore a total of 112 samples were collected and analysed for heavy metals using X-Ray Fluorescence spectrometry and 84 samples were analysed for gold using fire assaying. Tailings sampling was accompanied with tailings logging, taking note of colour, texture and moisture content. Based on this, the oxidation status of the tailings dam was determined. Oxidation zone of this tailings dam was mainly from top down to a depth of 3 m. The transitional zone was not identified, hence after the oxidation zone, the rest was unoxidized zone. This study established that gold was erratically distributed within the tailings dam with the lowest and highest values of 200 mg/kg and 1880 mg/kg respectively and the average was 670 mg/kg. The tonnage of tailings within the dam was found to be 13 280 310 tons with a total gold amount of 8 897. 81 kg. At the current world market, this interprets to US$ 306 932 396.00 (R 4 281 706 924.20). It was concluded that this tailings dam is economically viable for reprocessing, although previous studies have indicated that it is not possible to extract gold from tailings dams completely. The heavy metal content of Pb, Ni and Cr were found to be high with average values of (ppm); 5631.5, 2062.6 and 1345 v respectively. The metals with the lowest values were Cd, Co and Cu, averaging (ppm); 0.01 ppm, 19.8 ppm and 42.1 ppm respectively. Heavy metal content in soil around the tailings dam was gradually decreasing with distance from the tailings dam. Waste rocks have been used in some parts of the world as sub-base material for engineering construction, hence in this study, a total of 6 waste rock samples were collected using grab sampling method for geostatistical investigation. Such samples were subjected to various geotechnical tests which included particle size distribution analysis (sieve analysis), Atterberg limit tests and laboratory compaction test to determine their suitability for construction. The waste rock material was found to be suitable for road construction as it was classified under Group A-1-a using the AASHTO classification system. The material consisted mainly of rock fragments, gravel and sand material with minor silt/clay. In general, Consolidated Murchison mine waste was found to be suitable for road construction. / NRF

This study estimates the price and income elasticity coefficients of electricity demand in the mining sector of South Africa for the period ranging from April 2006 to March 2019. A time varying parameter (TVP) model with the Kalman filter is applied to monitor the evolution of the elasticity estimates. The TVP model can provide a robust estimation of elasticities and can detect any outliers and structural breaks. The results indicate that income and price elasticity coefficients of electricity demand are lower than unit. The income elasticity of demand has a positive sign and it is statistically significant. This indicates that mining production – used as a proxy for mining income – is a significant determinant of electricity consumption in the mining sector. In its final state income elasticity is estimated at 0.15 per cent. On the contrary, price does not play a significant role in explaining electricity demand. In fact, the price elasticity coefficient was found to be positive which is contrary to normal economic convention. This lack of response is attributed mainly to the mining sector’s inability to respond, rather than an unwillingness to do so. A fixed coefficient model in a form of Ordinary Least Squares (OLS) is used as a benchmark model to estimate average price and income elasticity coefficients for the period. The results of the OLS regression model confirm that price does not play a significant role in explaining electricity consumption in the mining sector. An average price elasticity coefficient of -0.007 has been estimated. Income elasticity was estimated at 0.11 for the period under review. The CUSUM of squares test indicate that parameters of the model are unstable. The Chow test confirms 2009 as a breakpoint in the data series. This means that elasticity coefficients of electricity demand in the mining sector are time variant. Thus the OLS results cannot be relied upon for inference purposes. The Kalman filter results are superior. This study cautions policy makers not to interpret the seeming lack of response to price changes as an indication that further prices increases could be implemented without hampering electricity consumption in the sector. Furthermore, it recommends that the electricity pricing policy should take into account both the negative impacts of rapid price increases and the need to invest in long-term electricity infrastructure in order to improve the security of energy supply. A long term electricity price path should be introduced in order to provide certainty and predictability in the price trajectory. This would allow all sectors of the economy sufficient time and space to make investment and operational decisions that would have the least adverse effects on economic growth and job creation. / Economics / M. Com. (Economics)

Latin America is in a political crisis, yet Bolivia is still widely recognized as a beacon of hope for progressive change. The radical movements at the beginning of the 21st century against neoliberalism that paved the road for the election of Bolivia's first indigenous president, Evo Morales, beckoned a change from colonial rule towards a more just society. Paradoxically, in pursuing progress through economic growth, the Bolivian state led by President Morales has replicated the colonial division of labor through a development model known as neo-extractivism. Deeply rooted tensions have also emerged between indigenous communities and the Bolivian state due to the latter's zealous economic bond with the extractivist sector. Although these paradoxes have received significant attention, one substantial aspect that remains underexplored and undertheorized is how such tensions affect socio-political relations at the intersections of class, race and gender where indigenous women in Bolivia occupy a unique position. To address this research gap, this qualitative study poses the following research questions: 1. How does neo-extractivism affect the lives of indigenous women? 2. How does the state shape relations between neo-extractivism and indigenous women? 3. How do indigenous women organize to challenge the impact of state-led extractivism on their lives and their communities? To answer these questions, I conducted a multi-sited ethnographic study between October 2017 and June 2018 in Oruro, Bolivia, an area that is heavily affected by mining contamination. By analyzing processes of social reproduction, I argue that neo-extractivism leads to water contamination and water scarcity, becoming the epicenter of the deterioration of subsistence agriculture and the dispossession of indigenous ways of life. Because indigenous women are subsistence producers and social reproducers whose activities depend on water, the dispossession of water has a dire effect on them, which demonstrates how capitalism relies on and exacerbates neo-colonial and patriarchal relations. To tame dissent to these contradictions, the Bolivian and self-proclaimed "indigenist state" defines and politicizes ethnicity in order to build a national identity based on indigeneity. This state-led ethnic inclusion, however, simultaneously produces class exclusions of indigenous campesinxs (peasants) who are not fully engaged in market relations. In contrast to the government's inclusive but rigidly-defined indigeneity, indigenous communities embrace a fluid and dual indigeneity: one that is connected to territories, yet also independent from them; a rooted indigeneity based on the praxis of what it means to be indigenous. Indigenous women and their communities embrace this fluid and rooted indigeneity to build alliances across gender, ethnic, and geographic lines to organize against neo-extractivism. Moreover, the daily responsibilities of social reproduction within the context of subsistence agriculture, which are embedded in Andean epistemes of reciprocity, duality, and complementarity, have allowed indigenous women to build solidarity networks that keep the social fabric within, and between, communities alive. These solidarity networks are sites of everyday resistances that represent a threat and an alternative to capitalist, colonial and patriarchal mandates.

Thesis (M.Sc.(Chemistry)) -- University of Limpopo, 2022 / Water contamination caused by toxic elements has serious human health and ecological implications. The increasing quantity of toxic elements in surface and groundwater is currently an area of greater concern, especially since many industries are discharging their metal containing effluents into freshwater without any adequate treatment. The mineral dissolution in mining regions is highly enhanced by mining and smelting activities. The mine waste and drainage in areas surrounding mines have high levels of toxic element contamination above the permissible limits. Contamination of groundwater by toxic elements such as As, Fe, Mn, Al, Cr, Zn and Co due to operational activities of surrounding mines in the Sekhukhune district was reported by several researchers. Removal of toxic elements from contaminated water is a big challenge. The affected communities need to attain a safe water supply source for daily usage, hence there is an urgent need of technologies for the treatment of water supplies contaminated with these toxic elements to ensure the safety of potable water. The study was undertaken by modifying nitrogen-doped multi-walled carbon nanotubes (N-MWCNTs) and investigating the removal of chromium, nickel and lead from anthropogenic contaminated groundwater in the Sekhukhune area, in Limpopo. The as-prepared N-MWCNTs functionalised with metal oxide, thiol and amino functional groups are expected to increase the surface area of the nanocomposite, which can facilitate high adsorption of contaminants from water samples. The adsorption capabilities for the removal of these toxic elements by modified N MWCNTs nanocomposites were investigated in batch studies as a function of different parameters. The parameters studied included pH, contact time, adsorbent dosage, initial concentration, temperature, competing ions and reusability. The optimum condition was then acquired for removal of selected toxic elements from real water studies. The removal efficiencies of the as-prepared nanocomposites were pH dependent and the optimal pH values for adsorption was 5.5, 1.5, 11 and 6 at optimum contact time of 10, 80, 60 and 120 min and dosage of 0.30, 0.35, 0.05 and 0.6 g/L for Cr(III), Cr(VI), Ni(II) and Pb(II), respectively. The prepared nanocomposites were characterised using various techniques such as Fourier transform infrared (FTIR) spectroscopy, powder X-ray diffraction (PXRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Brunauer-Emmet-Teller (BET) and thermogravimetric analysis (TGA). The FTIR analysis confirmed the presence of Fe3O4, -SH and -NH2 groups on the functionalised MWCNTs. The PXRD analysis further supported that the synthesized nanocomposites consisted of hexagonal graphite structure of MWCNTs. Furthermore, SEM and TEM results showed that the introduced functional groups were uniformly attached on the surface of the MWCNTs. The BET analysis indicated that the surface area of the modified MWCNTs nanocomposites increased significantly as compared to the acid treated MWCNTs. In addition, TGA showed that the M-MWCNTs (M = modified) nanocomposites possess high thermal stability. Raw N-MWCNTs showed higher stability as compared to oxidised N-MWCNTs, which decomposes at lower temperatures of 200 °C. No weight loss was observed below 800 °C for the hydrazine functionalised nanocomposites as compared to the triethylenetetramine (TETA)- substituted nanocomposites, which showed weight loss at 300 °C. Toxic elements in solutions before and after treatment were quantified using flame atomic absorption spectrometry (F-AAS). The adsorption isotherms of the as-prepared nanocomposites for chromium, nickel and lead removal fitted both the Langmuir and Freundlich model depending on the adsorbent used, which suggest that the adsorption process met both monolayer and heterogeneous adsorption. Thermodynamic analysis showed that the adsorption of Cr(III), Cr(VI), Ni(II) and Pb(II) ions are spontaneous and endothermic. The as-prepared nanocomposites showed an outstanding regeneration performance retaining over 50% toxic elements removal. Thus, the as prepared nanocomposites are promising for practical application in toxic element treatment. Analysis of the collected river and borehole water in Sekhukhune indicated that the concentration of total chromium, nickel and lead before treatment varied from (0.207 to 0.286 mg/L), (0.226 to 0.380 mg/L) and (3.301 to 8.017 mg/L), respectively which were above acceptable levels recommended by the South African National Standards (SANS), United States Environmental Protection Agency (USEPA) and World Health Organisation (WHO), i.e., 0.05 mg/L, 0.07 mg/L and 0.01 mg/L. After treatment, the nanocomposites were able to remove 100% of the metal ions from the water. TETA-functionalised nanocomposites showed greater removal efficiencies in comparison to the hydrazine-functionalised nanocomposites for all the studies done. / Water Research Commission (WRC)