The aim of this research was to determine if strategic marketing options will grow the sales of finer grade vermiculite.

The aim of this research was to determine if strategic marketing options will grow the sales of finer grade vermiculite.

The desire of the minerals industry to be more sustainable has led towards the increasing development of by-products. One such industry is the production of Alumina. The Alumina industry in Australia is the major producer of alumina in the western world with over 25 million tonnes of Bauxite Residue per annum. Alcoa World Alumina (Alcoa) has three refineries in Western Australia producing approximately 20,000 tonnes of Mud and a similar level of Red Sand each day. These as yet unutilised potential resources are being stockpiled, occupying a significant footprint. It is widely recognised within industry that there would be economic, environment and social benefits if a sustainable use for these materials were found. One such potential by-product is the production of coarse bauxite residue (Red Sand), neutralised and washed low in salt. The main purpose of this research was to establish a potential market for this material, through scientific evaluation of Red Sand as a replacement of natural fine aggregate (Natural Yellow Sand) in concrete mixes. For this research, the mixed stream of Bauxite Residue (fine and coarse) obtained in the Bayer process was neutralized by a process of carbonation then washed using cyclones and counter current wash towers to a value added byproduct. The coarse particles (Washed and Carbonated Sand-WCS) of the stream were separated by Wet High Intensity Magnetic Separation technique (WHIMS) so that different segments such as High Iron Sand (HIS) and Low Iron Sand (LIS) were formed. Physical, chemical and mineralogical properties of these materials have been tested and compared with that of natural sand. Several mixes of concrete were then designed using Red Sand as a fine aggregate in order to verify their effects on strength and durability indicators of concrete. / The comparative analysis between normal mix proportions and the mix proportions utilizing Red Sand was also achieved. In addition, the impact of marine environment on concrete mix design and properties of manufactured concrete were evaluated with a series of standard laboratory tests. The findings were promising in terms of both mechanical properties and durability and suggested that Red Sand, in particular Low Iron Sand is likely to be effective in place of fine aggregates and can be used within marine grade concrete with no major differences when compared to normal concrete. From the results obtained, it can be deduced that this material can be used in a wide range of concrete applications in Civil Engineering and Construction.

Σκοπός της παρούσας εργασίας είναι ο προσδιορισμός των βασικών χαρακτηριστικών των ενεργών ΕΤΑ (Έρευνα και Τεχνολογική Ανάπτυξη) επιχειρήσεων στους κλάδους πλαστικών και μη μεταλλικών ορυκτών στην Ελλάδα. Τα στοιχεία της εργασίας προέρχονται από τους δημοσιευμένους ισολογισμούς των επιχειρήσεων και αναφέρονται στα έτη από το 2001 έως και το 2008. Η επιλογή του δείγματος έγινε με κριτήριο εάν έχουν δηλωθεί έξοδα για ΕΤΑ στους ισολογισμούς των επιχειρήσεων. Για να ερμηνευθούν οι διαφοροποιήσεις σς ένα συγκεκριμένο χαρακτηριστικό των επιχειρήσεων, την ένταση δραστηριοτήτων ΕΤΑ,εκτιμήθηκαν υποδείγματα πολλαπλής γραμμικής παλινδρόμησης με τη μέθοδο Ελαχίστων Τετραγώνων (OLS), τα οποία είναι σε μορφή πάνελ δεδομένων. Τα αποτελέσματα της εμπειρικής ανάλυσης παρουσιάζουν σημαντικές διαφορές στους δύο κλάδους. / This study considers some of the economic issues surrounding determining factors of active R&D (Research and Development) firms. It includes firms belonging in the Greek plastics and non- metallic minerals industry. Data are derived from firms' published balance sheets and are referred to years 2001-2008. The sample has been chosen depending on whether expenses for R&D had been reported in the balance sheets. In order to interpret why differences around R&D intensity exist among firms, there have been estimated multiple linear regression models using the OLS method in panel data. Results from empirical analysis have significant differences among the two sectors.

The Mineral and Petroleum Resources Development Act (“MPRDA”) and the Broad-Based Socio-Economic Empowerment Charter for the South African Mining and Minerals Industry (“Mining Charter”), created in terms of the MPRDA, aim to address the exploitative legacies of past discriminatory practices in the mining industry. Impoverished mining communities stand to benefit from empowerment under the Mining Charter in the form of mine community development – one of the elements that constitute a mining right holder's commitment under the Mining Charter. Despite this legislative intervention and the relative wealth generated by the extraction of mineral resources, poverty and conflict have become the stereotypical images associated with mining areas. This project aims to determine why the empowerment of mining communities through mine community development perpetuates poverty from the past and creates new inequalities. To answer this main question, it is considered how the historical context within which the relevant policy and legislation were created, affected legislative drafting. Second, the effects of promoting development and empowerment in legislative provisions are explored to determine which worldviews and underlying values are being promoted by the legislative instruments under discussion. Furthermore, it is considered how these worldviews and underlying values affect how mining communities, subjected to harsh socio-economic living conditions, are depicted in legislative provisions. Here, it is specifically considered what the notion of “community” signifies in a development context and how “community” is represented in legislation. The thesis is a theoretical exposition of the ideological assumptions underlying the concepts “development”, “empowerment”, “community” and “poverty”. It is shown that “mine community development” is an inherently contradictory notion in South African law. The development paradigm implies the universalisation of values, effectively creating “the poor”, and causing vagueness and paradoxes. It results not only in a perpetuation of poverty and inequality from the past but also in the creation of new inequalities, as is evident in the differentiation drawn by the Mining Charter between different types of communities in mining areas. Measures currently being enforced by the legislation under discussion, are in desperate need of reconsideration.

This thesis explores the factors that influence the extent to which the World Wide Web (henceforth web) is utilised by corporations in an environmentally sensitive industry to communicate with their stakeholders in relation to environmental issues. The study initially establishes, in theory, the communication potential of the web and possible factors which can impact on the extent to which this potential is utilised for environmental communication. Subsequently, it examines the use of the web by specific companies in the Australian minerals industry for communicating environmental issues to their stakeholders over time. Explanations for current practices are established through an analysis of the impact of the factors established in theory on web based environmental communication in the Australian minerals industry.¶ A model was established to guide the research process for this study. Drawing upon media richness theory (Daft & Lengel, 1984, 1986; Sproull, 1991; Valacich et al., 1993), the Media Richness Framework was developed to provide criteria for assessing the communication potential of the web. It was also posited that the extent to which this potential is utilised in practice is dependent on management’s web based communication needs. These needs incorporate timeliness, accessibility, presentation and organisation, and interaction. Contextual factors, which include limitations of web based technologies, economic, internal organisational and external stakeholder issues, influence these needs.¶ Case study research (Hagg & Hedlund, 1979; Yin, 2003a, 2003b; Scapens, 2004) was used as the methodological approach for this thesis in order to obtain an in-depth understanding of current web based environmental communication practices. An evaluation of the websites of mining companies was used as the basis for selecting three companies as cases. These cases involved a triangulation of approaches towards data collection: monitoring corporate websites on a regular basis; interviewing appropriate personnel in these organisations; and evaluating documents related to the companies’ environmental communication practice. Data gathered from interviews, websites and documents were analysed for individual cases and then through cross-case comparisons. The intention was to confirm the research model and to potentially extend it through a consideration of other factors not identified in theory but evident in current practices.¶ The findings of this research indicate that even though the web has the potential to enhance environmental communication in an environmentally sensitive industry that is subject to extensive stakeholder pressures, there is variation in its use by companies in the Australian minerals industry. An evaluation of the practices of the three chosen companies highlighted that while the web is used extensively by these companies in comparison with other corporations in the industry, the case study companies were at different stages of web based environmental communication.¶ Management’s web based environmental communication needs and the influence of contextual factors on these needs explained the variation in web based environmental communication across all three companies. Moreover, two other factors emerged from the field; these are referred to as the double-edged sword and change in management philosophy. These findings from the field highlight that the need for communication through the web could have unintended consequences while a change in management could alter the current approach towards web based environmental communication.¶ This study into the use of the web in the Australian minerals industry highlights that the medium has an impact on environmental communication practice. Further research could assess the communication potential of the various media used for environmental communication in order to extend the explanatory power of the current study. This study also outlines arguments in support of extending theorisation in environmental communication. Existing theories for social and environmental accounting, such as stakeholder and legitimacy theory (Roberts, 1992; Lindblom, 1993; Deegan, 2002) need to be accompanied by other theoretical perspectives in order to capture a range of potential factors that could impact environmental communication practices. Such insights could provide a comprehensive understanding of environmental communication in different contexts.